Номер 630, страница 159 - гдз по геометрии 10-11 класс учебник Атанасян, Бутузов

Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета

Авторы: Атанасян Л. С., Бутузов В. Ф., Кадомцев С. Б., Позняк Э. Г., Киселёва Л. С.

Тип: Учебник

Издательство: Просвещение

Год издания: 2019 - 2026

Уровень обучения: базовый и углублённый

Цвет обложки: коричневый с ромбами

ISBN: 978-5-09-103606-0 (2023)

Допущено Министерством просвещения Российской Федерации

Математика: алгебра и начала математического анализа, геометрия

Глава 6. Векторы в пространстве. Параграф 3. Компланарные векторы, дополнительные задачи - номер 630, страница 159.

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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1136
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
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                          #attributes: array:6 [
                            "id" => 5460
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "11"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "odinadcatyj"
                          ]
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                            "id" => 5460
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "11"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "odinadcatyj"
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                      ]
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1137
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                        0 => App\Models\Term {#1138
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #attributes: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
                          ]
                          #original: array:6 [
                            "id" => 5153
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Просвещение"
                            "field_cases" => null
                            "field_translit" => "prosveschenie"
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                      ]
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                    "field_author" => Illuminate\Database\Eloquent\Collection {#1139
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                        0 => App\Models\Term {#1140
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #perPage: 15
                          +exists: true
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 3753
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Атанасян"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Левон"
                            "field_patronymic" => "Сергеевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 3753
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Атанасян"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Левон"
                            "field_patronymic" => "Сергеевич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
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                          #dateFormat: null
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                          #touches: []
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1141
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 3949
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Бутузов"
                            "field_bio" => null
                            "field_degree_rp" => null
                             …6
                          ]
                          #original: array:12 [ …12]
                          #changes: []
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                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
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                          #touches: []
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                        2 => App\Models\Term {#1142
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                        3 => App\Models\Term {#1143
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          +exists: true
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
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                          +timestamps: true
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                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                        4 => App\Models\Term {#1144
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
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                          +exists: true
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [ …12]
                          #original: array:12 [ …12]
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1145
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1146
                      #items: array:1 [
                        0 => App\Models\Term {#1147
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [ …10]
                          #original: array:10 [ …10]
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                          #dateFormat: null
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                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1148
                      #items: array:1 [
                        0 => App\Models\Term {#1149
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #attributes: array:6 [ …6]
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                          #touches: []
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1150
                      #items: array:1 [
                        0 => App\Models\Term {#1151
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #with: []
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                          #attributes: array:6 [ …6]
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                          #touches: []
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [ …1]
                        }
                      ]
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                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1152
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1153
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1154
                      #items: array:1 [
                        0 => App\Models\Term {#1155
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #escapeWhenCastingToString: false
                          #attributes: array:6 [ …6]
                          #original: array:6 [ …6]
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                          #dateFormat: null
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1156
                      #items: array:1 [
                        0 => App\Models\Term {#1157
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #escapeWhenCastingToString: false
                          #attributes: array:10 [ …10]
                          #original: array:10 [ …10]
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                          #guarded: array:1 [ …1]
                        }
                      ]
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                    }
                    "field_publication_number" => "11"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1158
                      #items: array:1 [
                        0 => App\Models\Term {#1159
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #attributes: array:6 [ …6]
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                        }
                      ]
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                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1160
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => "с ромбами"
                    "field_publication_year" => "2019"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для общеобразовательных организаций"
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия"
                    "field_link_to_source" => null
                    "field_tasks_count" => "1147"
                    "field_priority" => "12"
                    "field_default_folder" => "/geometrija_10/atanasjan-u23/"
                    "field_isbn" => "978-5-09-103606-0 (2023)"
                    "field_cover" => array:1 [
                      0 => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1661"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1161
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1162
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1163
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/10-klass/geometrija/atanasjan-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1164
                      #items: array:1 [
                        0 => App\Models\Term {#1165
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #with: []
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                          #attributes: array:6 [ …6]
                          #original: array:6 [ …6]
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                        }
                      ]
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                    "field_metatags_title" => null
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                    ]
                  ]
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                    "id" => 36
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                    "updated_at" => null
                    "field_tree_default_status" => "tasks"
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                    "field_subject" => Illuminate\Database\Eloquent\Collection {#1133}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1134}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1137}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1139}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1145}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1146}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1148}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1150}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1152}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1153}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1154}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1156}
                    "field_publication_number" => "11"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1158}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1160}
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => "с ромбами"
                    "field_publication_year" => "2019"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для общеобразовательных организаций"
                    "field_allowed" => "Допущено Министерством просвещения Российской Федерации"
                    "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия"
                    "field_link_to_source" => null
                    "field_tasks_count" => "1147"
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                    "field_default_folder" => "/geometrija_10/atanasjan-u23/"
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                      0 => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242"
                    ]
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                      0 => ""
                    ]
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                      0 => array:4 [
                        "path" => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242"
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                        "width" => "1200"
                        "height" => "1661"
                      ]
                    ]
                    "field_popular_book" => null
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                    "field_url" => "/10-klass/geometrija/atanasjan-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1164}
                    "field_metatags_title" => null
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                    ]
                  ]
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                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1166
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 744399
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Векторы в пространстве"
            "field_branch_order" => "6"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1132}
            "field_page_start" => "142"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1168}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1166}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
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          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1167
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 744404
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Компланарные векторы, дополнительные задачи"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1172
              #items: array:1 [
                0 => App\Models\Term {#1169
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "157"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
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            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
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            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1171
              #items: array:1 [
                0 => App\Models\Book {#1131}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1170
              #items: array:1 [
                0 => App\Models\Branch {#1034}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 744404
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Компланарные векторы, дополнительные задачи"
            "field_branch_order" => "3"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1172}
            "field_page_start" => "157"
            "field_branch_display" => "0"
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            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1171}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1170}
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1112
      #items: array:5 [
        0 => App\Models\Element {#1099
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:7 [
            "id" => 939385
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1092
              #items: array:1 [
                0 => App\Models\Edition {#1100
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 2315
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1098 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1096 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1090 …2}
                    "field_process_formula" => "wiris"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 2315
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1098 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
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                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1096 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1090 …2}
                    "field_process_formula" => "wiris"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
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                  #visible: []
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                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "745045"
              "type" => "task"
            ]
            "text" => "<p> <b>630.</b> В параллелепипеде <i>ABCDA₁B₁C₁D₁</i> точка K — середина ребра <i>СС₁.</i> Разложите вектор: а) <span class="arrtoptoleft">AK</span> по векторам <span class="arrtoptoleft">AB,</span> <span class="arrtoptoleft">AD,</span> <span class="arrtoptoleft">AA₁;</span> б) <span class="arrtoptoleft">DA₁</span> по векторам <span class="arrtoptoleft">AB₁,</span> <span class="arrtoptoleft">BC₁</span> и <span class="arrtoptoleft">CD₁.</span> </p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "630-1.jpg"
                "alt" => null
                "width" => "1534"
                "height" => 253
                "path" => "/media/geometrija_10/atanasjan-u23/0-00/630-1.webp?ts=1739436793"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 939385
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1092}
            "task" => array:2 [
              "refs" => "745045"
              "type" => "task"
            ]
            "text" => "<p> <b>630.</b> В параллелепипеде <i>ABCDA₁B₁C₁D₁</i> точка K — середина ребра <i>СС₁.</i> Разложите вектор: а) <span class="arrtoptoleft">AK</span> по векторам <span class="arrtoptoleft">AB,</span> <span class="arrtoptoleft">AD,</span> <span class="arrtoptoleft">AA₁;</span> б) <span class="arrtoptoleft">DA₁</span> по векторам <span class="arrtoptoleft">AB₁,</span> <span class="arrtoptoleft">BC₁</span> и <span class="arrtoptoleft">CD₁.</span> </p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "630-1.jpg"
                "alt" => null
                "width" => "1534"
                "height" => 253
                "path" => "/media/geometrija_10/atanasjan-u23/0-00/630-1.webp?ts=1739436793"
              ]
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
          +timestamps: true
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          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1123
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 942352
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1179
              #items: array:1 [
                0 => App\Models\Edition {#1121
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 2317
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 2"
                    "field_order" => "3"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1173 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Неизвестный"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "2-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1174 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1175 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1176 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 2317
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 2"
                    "field_order" => "3"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1173 …2}
                    "field_content_type" => "free"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Неизвестный"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "2-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1174 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1175 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1176 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "745045"
              "type" => "task"
            ]
            "img" => array:2 [
              0 => array:5 [
                "name" => "630-1.png"
                "alt" => null
                "width" => "694"
                "height" => 4566
                "path" => "/media/geometrija_10/atanasjan-u23/2-00/630-1.webp?ts=1739441519"
              ]
              1 => array:5 [
                "name" => "630-2.png"
                "alt" => null
                "width" => "694"
                "height" => 4789
                "path" => "/media/geometrija_10/atanasjan-u23/2-00/630-2.webp?ts=1739441519"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 942352
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1179}
            "task" => array:2 [
              "refs" => "745045"
              "type" => "task"
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            "img" => array:2 [
              0 => array:5 [
                "name" => "630-1.png"
                "alt" => null
                "width" => "694"
                "height" => 4566
                "path" => "/media/geometrija_10/atanasjan-u23/2-00/630-1.webp?ts=1739441519"
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              1 => array:5 [
                "name" => "630-2.png"
                "alt" => null
                "width" => "694"
                "height" => 4789
                "path" => "/media/geometrija_10/atanasjan-u23/2-00/630-2.webp?ts=1739441519"
              ]
            ]
          ]
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          #attributeCastCache: []
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          #visible: []
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            0 => "*"
          ]
        }
        2 => App\Models\Element {#1086
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 942262
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1124
              #items: array:1 [
                0 => App\Models\Edition {#1083
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 2318
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 3"
                    "field_order" => "4"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_content_type" => "free"
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                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Неизвестный"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "3-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1119 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1118 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1127 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 2318
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 3"
                    "field_order" => "4"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1078 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Неизвестный"
                    "field_moderator" => "pasha"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "3-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1119 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1118 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1127 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
                  #casts: []
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "745045"
              "type" => "task"
            ]
            "img" => array:2 [
              0 => array:5 [
                "name" => "630-1.jpg"
                "alt" => null
                "width" => "1308"
                "height" => 667
                "path" => "/media/geometrija_10/atanasjan-u23/3-00/630-1.webp?ts=1739437074"
              ]
              1 => array:5 [
                "name" => "630-2.jpg"
                "alt" => null
                "width" => "1308"
                "height" => 408
                "path" => "/media/geometrija_10/atanasjan-u23/3-00/630-2.webp?ts=1739437074"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 942262
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1124}
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            "text" => "<p><strong>а)</strong> Разложение вектора $\vec{AK}$ по векторам $\vec{AB}$, $\vec{AD}$, $\vec{AA_1}$.</p><p>Чтобы разложить вектор $\vec{AK}$, представим его как сумму векторов, идущих из точки $A$ в точку $K$. Воспользуемся правилом многоугольника (или правилом замыкания ломаной), выбрав путь через вершины параллелепипеда, например, $A \rightarrow C \rightarrow K$.</p><p>Тогда вектор $\vec{AK}$ можно представить в виде суммы:</p><p>$\vec{AK} = \vec{AC} + \vec{CK}$</p><p>Теперь выразим каждый вектор в этой сумме через заданные базисные векторы $\vec{AB}$, $\vec{AD}$ и $\vec{AA_1}$.</p><p>1. Вектор $\vec{AC}$ является диагональю основания $ABCD$. По правилу сложения векторов в параллелограмме (правило параллелограмма):</p><p>$\vec{AC} = \vec{AB} + \vec{AD}$</p><p>2. Точка $K$ — середина ребра $CC_1$. Это означает, что вектор $\vec{CK}$ составляет половину вектора $\vec{CC_1}$ и сонаправлен с ним:</p><p>$\vec{CK} = \frac{1}{2}\vec{CC_1}$</p><p>В параллелепипеде боковые ребра параллельны и равны, поэтому векторы, им соответствующие, равны: $\vec{CC_1} = \vec{BB_1} = \vec{AA_1}$. Следовательно:</p><p>$\vec{CK} = \frac{1}{2}\vec{AA_1}$</p><p>3. Подставим полученные выражения для $\vec{AC}$ и $\vec{CK}$ в исходное равенство для $\vec{AK}$:</p><p>$\vec{AK} = (\vec{AB} + \vec{AD}) + \frac{1}{2}\vec{AA_1}$</p><p>$\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$</p><p>Ответ: $\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$.</p><p><strong>б)</strong> Разложение вектора $\vec{DA_1}$ по векторам $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$.</p><p>Эта задача требует разложения по небазисным векторам. Удобнее всего сначала выразить и искомый вектор, и векторы разложения через один и тот же стандартный базис, например, $\vec{a} = \vec{AB}$, $\vec{b} = \vec{AD}$, $\vec{c} = \vec{AA_1}$.</p><p>1. Выразим искомый вектор $\vec{DA_1}$ через базис $\vec{a}, \vec{b}, \vec{c}$:</p><p>$\vec{DA_1} = \vec{DA} + \vec{AA_1}$</p><p>Поскольку $\vec{DA} = -\vec{AD} = -\vec{b}$, получаем:</p><p>$\vec{DA_1} = -\vec{b} + \vec{c}$</p><p>2. Теперь выразим векторы $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$ через тот же базис:</p><p>$\vec{AB_1} = \vec{AB} + \vec{BB_1} = \vec{AB} + \vec{AA_1} = \vec{a} + \vec{c}$</p><p>$\vec{BC_1} = \vec{BC} + \vec{CC_1} = \vec{AD} + \vec{AA_1} = \vec{b} + \vec{c}$ (так как $\vec{BC}=\vec{AD}$ и $\vec{CC_1}=\vec{AA_1}$)</p><p>$\vec{CD_1} = \vec{CD} + \vec{DD_1} = -\vec{AB} + \vec{AA_1} = -\vec{a} + \vec{c}$ (так как $\vec{CD}=-\vec{AB}$ и $\vec{DD_1}=\vec{AA_1}$)</p><p>3. Нам нужно найти такие коэффициенты $x, y, z$, что:</p><p>$\vec{DA_1} = x \cdot \vec{AB_1} + y \cdot \vec{BC_1} + z \cdot \vec{CD_1}$</p><p>Подставим в это равенство выражения векторов через базис $\vec{a}, \vec{b}, \vec{c}$:</p><p>$-\vec{b} + \vec{c} = x(\vec{a} + \vec{c}) + y(\vec{b} + \vec{c}) + z(-\vec{a} + \vec{c})$</p><p>Раскроем скобки и сгруппируем слагаемые при базисных векторах:</p><p>$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x\vec{a} - z\vec{a}) + y\vec{b} + (x\vec{c} + y\vec{c} + z\vec{c})$</p><p>$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x-z)\vec{a} + y\vec{b} + (x+y+z)\vec{c}$</p><p>Поскольку векторы $\vec{a}, \vec{b}, \vec{c}$ линейно независимы (некомпланарны), равенство векторов возможно только при равенстве их соответствующих координат (коэффициентов). Составим систему уравнений:</p><p>$\begin{cases} x-z = 0 \\ y = -1 \\ x+y+z = 1 \end{cases}$</p><p>Из первого уравнения следует, что $x=z$. Второй коэффициент уже известен: $y=-1$. Подставим эти значения в третье уравнение:</p><p>$x + (-1) + x = 1$</p><p>$2x - 1 = 1$</p><p>$2x = 2$</p><p>$x = 1$</p><p>Так как $x=z$, то $z=1$.</p><p>Итак, мы нашли коэффициенты разложения: $x=1, y=-1, z=1$.</p><p>Подставляем их в искомое разложение:</p><p>$\vec{DA_1} = 1 \cdot \vec{AB_1} - 1 \cdot \vec{BC_1} + 1 \cdot \vec{CD_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$</p><p>Ответ: $\vec{DA_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$.</p>"
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            "text" => "<p><strong>а)</strong> Разложение вектора $\vec{AK}$ по векторам $\vec{AB}$, $\vec{AD}$, $\vec{AA_1}$.</p><p>Чтобы разложить вектор $\vec{AK}$, представим его как сумму векторов, идущих из точки $A$ в точку $K$. Воспользуемся правилом многоугольника (или правилом замыкания ломаной), выбрав путь через вершины параллелепипеда, например, $A \rightarrow C \rightarrow K$.</p><p>Тогда вектор $\vec{AK}$ можно представить в виде суммы:</p><p>$\vec{AK} = \vec{AC} + \vec{CK}$</p><p>Теперь выразим каждый вектор в этой сумме через заданные базисные векторы $\vec{AB}$, $\vec{AD}$ и $\vec{AA_1}$.</p><p>1. Вектор $\vec{AC}$ является диагональю основания $ABCD$. По правилу сложения векторов в параллелограмме (правило параллелограмма):</p><p>$\vec{AC} = \vec{AB} + \vec{AD}$</p><p>2. Точка $K$ — середина ребра $CC_1$. Это означает, что вектор $\vec{CK}$ составляет половину вектора $\vec{CC_1}$ и сонаправлен с ним:</p><p>$\vec{CK} = \frac{1}{2}\vec{CC_1}$</p><p>В параллелепипеде боковые ребра параллельны и равны, поэтому векторы, им соответствующие, равны: $\vec{CC_1} = \vec{BB_1} = \vec{AA_1}$. Следовательно:</p><p>$\vec{CK} = \frac{1}{2}\vec{AA_1}$</p><p>3. Подставим полученные выражения для $\vec{AC}$ и $\vec{CK}$ в исходное равенство для $\vec{AK}$:</p><p>$\vec{AK} = (\vec{AB} + \vec{AD}) + \frac{1}{2}\vec{AA_1}$</p><p>$\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$</p><p>Ответ: $\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$.</p><p><strong>б)</strong> Разложение вектора $\vec{DA_1}$ по векторам $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$.</p><p>Эта задача требует разложения по небазисным векторам. Удобнее всего сначала выразить и искомый вектор, и векторы разложения через один и тот же стандартный базис, например, $\vec{a} = \vec{AB}$, $\vec{b} = \vec{AD}$, $\vec{c} = \vec{AA_1}$.</p><p>1. Выразим искомый вектор $\vec{DA_1}$ через базис $\vec{a}, \vec{b}, \vec{c}$:</p><p>$\vec{DA_1} = \vec{DA} + \vec{AA_1}$</p><p>Поскольку $\vec{DA} = -\vec{AD} = -\vec{b}$, получаем:</p><p>$\vec{DA_1} = -\vec{b} + \vec{c}$</p><p>2. Теперь выразим векторы $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$ через тот же базис:</p><p>$\vec{AB_1} = \vec{AB} + \vec{BB_1} = \vec{AB} + \vec{AA_1} = \vec{a} + \vec{c}$</p><p>$\vec{BC_1} = \vec{BC} + \vec{CC_1} = \vec{AD} + \vec{AA_1} = \vec{b} + \vec{c}$ (так как $\vec{BC}=\vec{AD}$ и $\vec{CC_1}=\vec{AA_1}$)</p><p>$\vec{CD_1} = \vec{CD} + \vec{DD_1} = -\vec{AB} + \vec{AA_1} = -\vec{a} + \vec{c}$ (так как $\vec{CD}=-\vec{AB}$ и $\vec{DD_1}=\vec{AA_1}$)</p><p>3. Нам нужно найти такие коэффициенты $x, y, z$, что:</p><p>$\vec{DA_1} = x \cdot \vec{AB_1} + y \cdot \vec{BC_1} + z \cdot \vec{CD_1}$</p><p>Подставим в это равенство выражения векторов через базис $\vec{a}, \vec{b}, \vec{c}$:</p><p>$-\vec{b} + \vec{c} = x(\vec{a} + \vec{c}) + y(\vec{b} + \vec{c}) + z(-\vec{a} + \vec{c})$</p><p>Раскроем скобки и сгруппируем слагаемые при базисных векторах:</p><p>$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x\vec{a} - z\vec{a}) + y\vec{b} + (x\vec{c} + y\vec{c} + z\vec{c})$</p><p>$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x-z)\vec{a} + y\vec{b} + (x+y+z)\vec{c}$</p><p>Поскольку векторы $\vec{a}, \vec{b}, \vec{c}$ линейно независимы (некомпланарны), равенство векторов возможно только при равенстве их соответствующих координат (коэффициентов). Составим систему уравнений:</p><p>$\begin{cases} x-z = 0 \\ y = -1 \\ x+y+z = 1 \end{cases}$</p><p>Из первого уравнения следует, что $x=z$. Второй коэффициент уже известен: $y=-1$. Подставим эти значения в третье уравнение:</p><p>$x + (-1) + x = 1$</p><p>$2x - 1 = 1$</p><p>$2x = 2$</p><p>$x = 1$</p><p>Так как $x=z$, то $z=1$.</p><p>Итак, мы нашли коэффициенты разложения: $x=1, y=-1, z=1$.</p><p>Подставляем их в искомое разложение:</p><p>$\vec{DA_1} = 1 \cdot \vec{AB_1} - 1 \cdot \vec{BC_1} + 1 \cdot \vec{CD_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$</p><p>Ответ: $\vec{DA_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$.</p>"
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№630 (с. 159)
Условие. №630 (с. 159)
скриншот условия
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Условие

630. В параллелепипеде ABCDA₁B₁C₁D₁ точка K — середина ребра СС₁. Разложите вектор: а) AK по векторам AB, AD, AA₁; б) DA₁ по векторам AB₁, BC₁ и CD₁.

Решение 2. №630 (с. 159)
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Решение 2
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Решение 2 (продолжение 2)
Решение 3. №630 (с. 159)
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Решение 3
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Решение 3 (продолжение 2)
Решение 5. №630 (с. 159)
Геометрия, 10-11 класс Учебник, авторы: Атанасян Левон Сергеевич, Бутузов Валентин Фёдорович, Кадомцев Сергей Борисович, Позняк Эдуард Генрихович, Киселёва Людмила Сергеевна, издательство Просвещение, Москва, 2019, коричневого цвета, страница 159, номер 630, Решение 5
Решение 6. №630 (с. 159)

а) Разложение вектора $\vec{AK}$ по векторам $\vec{AB}$, $\vec{AD}$, $\vec{AA_1}$.

Чтобы разложить вектор $\vec{AK}$, представим его как сумму векторов, идущих из точки $A$ в точку $K$. Воспользуемся правилом многоугольника (или правилом замыкания ломаной), выбрав путь через вершины параллелепипеда, например, $A \rightarrow C \rightarrow K$.

Тогда вектор $\vec{AK}$ можно представить в виде суммы:

$\vec{AK} = \vec{AC} + \vec{CK}$

Теперь выразим каждый вектор в этой сумме через заданные базисные векторы $\vec{AB}$, $\vec{AD}$ и $\vec{AA_1}$.

1. Вектор $\vec{AC}$ является диагональю основания $ABCD$. По правилу сложения векторов в параллелограмме (правило параллелограмма):

$\vec{AC} = \vec{AB} + \vec{AD}$

2. Точка $K$ — середина ребра $CC_1$. Это означает, что вектор $\vec{CK}$ составляет половину вектора $\vec{CC_1}$ и сонаправлен с ним:

$\vec{CK} = \frac{1}{2}\vec{CC_1}$

В параллелепипеде боковые ребра параллельны и равны, поэтому векторы, им соответствующие, равны: $\vec{CC_1} = \vec{BB_1} = \vec{AA_1}$. Следовательно:

$\vec{CK} = \frac{1}{2}\vec{AA_1}$

3. Подставим полученные выражения для $\vec{AC}$ и $\vec{CK}$ в исходное равенство для $\vec{AK}$:

$\vec{AK} = (\vec{AB} + \vec{AD}) + \frac{1}{2}\vec{AA_1}$

$\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$

Ответ: $\vec{AK} = \vec{AB} + \vec{AD} + \frac{1}{2}\vec{AA_1}$.

б) Разложение вектора $\vec{DA_1}$ по векторам $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$.

Эта задача требует разложения по небазисным векторам. Удобнее всего сначала выразить и искомый вектор, и векторы разложения через один и тот же стандартный базис, например, $\vec{a} = \vec{AB}$, $\vec{b} = \vec{AD}$, $\vec{c} = \vec{AA_1}$.

1. Выразим искомый вектор $\vec{DA_1}$ через базис $\vec{a}, \vec{b}, \vec{c}$:

$\vec{DA_1} = \vec{DA} + \vec{AA_1}$

Поскольку $\vec{DA} = -\vec{AD} = -\vec{b}$, получаем:

$\vec{DA_1} = -\vec{b} + \vec{c}$

2. Теперь выразим векторы $\vec{AB_1}$, $\vec{BC_1}$ и $\vec{CD_1}$ через тот же базис:

$\vec{AB_1} = \vec{AB} + \vec{BB_1} = \vec{AB} + \vec{AA_1} = \vec{a} + \vec{c}$

$\vec{BC_1} = \vec{BC} + \vec{CC_1} = \vec{AD} + \vec{AA_1} = \vec{b} + \vec{c}$ (так как $\vec{BC}=\vec{AD}$ и $\vec{CC_1}=\vec{AA_1}$)

$\vec{CD_1} = \vec{CD} + \vec{DD_1} = -\vec{AB} + \vec{AA_1} = -\vec{a} + \vec{c}$ (так как $\vec{CD}=-\vec{AB}$ и $\vec{DD_1}=\vec{AA_1}$)

3. Нам нужно найти такие коэффициенты $x, y, z$, что:

$\vec{DA_1} = x \cdot \vec{AB_1} + y \cdot \vec{BC_1} + z \cdot \vec{CD_1}$

Подставим в это равенство выражения векторов через базис $\vec{a}, \vec{b}, \vec{c}$:

$-\vec{b} + \vec{c} = x(\vec{a} + \vec{c}) + y(\vec{b} + \vec{c}) + z(-\vec{a} + \vec{c})$

Раскроем скобки и сгруппируем слагаемые при базисных векторах:

$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x\vec{a} - z\vec{a}) + y\vec{b} + (x\vec{c} + y\vec{c} + z\vec{c})$

$0 \cdot \vec{a} - 1 \cdot \vec{b} + 1 \cdot \vec{c} = (x-z)\vec{a} + y\vec{b} + (x+y+z)\vec{c}$

Поскольку векторы $\vec{a}, \vec{b}, \vec{c}$ линейно независимы (некомпланарны), равенство векторов возможно только при равенстве их соответствующих координат (коэффициентов). Составим систему уравнений:

$\begin{cases} x-z = 0 \\ y = -1 \\ x+y+z = 1 \end{cases}$

Из первого уравнения следует, что $x=z$. Второй коэффициент уже известен: $y=-1$. Подставим эти значения в третье уравнение:

$x + (-1) + x = 1$

$2x - 1 = 1$

$2x = 2$

$x = 1$

Так как $x=z$, то $z=1$.

Итак, мы нашли коэффициенты разложения: $x=1, y=-1, z=1$.

Подставляем их в искомое разложение:

$\vec{DA_1} = 1 \cdot \vec{AB_1} - 1 \cdot \vec{BC_1} + 1 \cdot \vec{CD_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$

Ответ: $\vec{DA_1} = \vec{AB_1} - \vec{BC_1} + \vec{CD_1}$.

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