Номер 3, страница 43, часть 1 - гдз по алгебре 10 класс учебник Пак, Ардакулы

Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019

Авторы: Пак О. В., Ардакулы Д., Ескендирова Е. В.

Тип: Учебник

Издательство: Алматыкітап баспасы

Год издания: 2019 - 2026

Часть: 1

ISBN: 978-601-01-3958-9

Рекомендовано Министерством образования и науки Республики Казахстан

Часть 1. Глава 1. Функции, её свойства и график. Параграф 4. Периодические функции. Задачи - номер 3, страница 43.

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                            "created_at" => "2026-04-10 13:58:26"
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                          ]
                        }
                      ]
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                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1063
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                        0 => App\Models\Term {#1064
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                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
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                            "created_at" => "2026-04-10 13:58:26"
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                              "field_nominative_case" => null
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                            ]
                            "field_translit" => "kazakhstan"
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Казахстан"
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                              "field_nominative_case" => null
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                            ]
                            "field_translit" => "kazakhstan"
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                        }
                      ]
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                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1065
                      #items: array:1 [
                        0 => App\Models\Term {#1066
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
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                          #withCount: []
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                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            ]
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                          ]
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Алматы"
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                            ]
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                          ]
                        }
                      ]
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                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1067
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1068
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1069
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1070
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => null
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1071
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                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1072
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => null
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                    "field_part" => "1, 2"
                    "field_part_writing" => "Часть"
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для учащихся 10 класса общеобразовательной школы общественно-гуманитарного направления"
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                    "field_tasks_count" => "1063"
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                    "field_default_folder" => "/algebra_10/baspasy-u19/"
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                    "field_cover" => array:1 [
                      0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
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                      ]
                    ]
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                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1073
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                    }
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                    }
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                    }
                    "field_url" => "/10-klass/algebra/baspasy-pak-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1076
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                    }
                    "field_metatags_title" => null
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                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1071}
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                    "field_cover" => array:1 [
                      0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
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                    "field_cover_alts" => array:1 [
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                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1073}
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                    "field_url" => "/10-klass/algebra/baspasy-pak-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1076}
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                  ]
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                    0 => "*"
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              ]
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            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1077
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              0 => array:4 [
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              ]
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            "book" => Illuminate\Database\Eloquent\Collection {#1079}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1077}
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      #escapeWhenCastingToString: false
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    "parent_branches" => Illuminate\Database\Eloquent\Collection {#1107
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        0 => App\Models\Branch {#1117
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          #table: "branches"
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          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #attributes: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
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            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1118
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                0 => App\Models\Term {#1047}
              ]
              #escapeWhenCastingToString: false
            }
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            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => array:1 [
              0 => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
            ]
            "field_branch_covers" => array:1 [
              0 => array:4 [
                "path" => "/media/algebra_10/baspasy-u19/covers/cover1.webp?ts=1752152865"
                "alt" => ""
                "width" => "1940"
                "height" => "2895"
              ]
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1119
              #items: array:1 [
                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1120
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 1119328
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_branch_order" => "1"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1118}
            "field_page_start" => "6"
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          #visible: []
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            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1121
          #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 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Функции, её свойства и график"
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            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1125
              #items: array:1 [
                0 => App\Models\Term {#1122
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #perPage: 15
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                  #attributes: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                      "field_accusative_case" => "Главу"
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                      "field_dative_case" => "Главе"
                      "field_genitive_case" => "Главы"
                      "field_nominative_case" => "Глава"
                      "field_prepositional_case" => "Главе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => null
                  ]
                  #original: array:7 [
                    "id" => 29
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Глава"
                    "field_cases" => array:6 [
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                      "field_genitive_case" => "Главы"
                      "field_nominative_case" => "Глава"
                      "field_prepositional_case" => "Главе"
                    ]
                    "field_page_check_not_needed" => null
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                  ]
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                    0 => "*"
                  ]
                }
              ]
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            }
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            "field_h1" => null
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            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1124
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                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1123
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                0 => App\Models\Branch {#1045}
              ]
              #escapeWhenCastingToString: false
            }
          ]
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            "field_display_branch_page" => "1"
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            "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 {#1124}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1123}
          ]
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          #attributeCastCache: []
          #dateFormat: null
          #appends: []
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Branch {#1126
          #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" => 1119345
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Периодические функции"
            "field_branch_order" => "4"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1130
              #items: array:1 [
                0 => App\Models\Term {#1127
                  #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 [
                      "field_accusative_case" => "Параграф"
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                      "field_dative_case" => "Параграфу"
                      "field_genitive_case" => "Параграфа"
                      "field_nominative_case" => "Параграф"
                      "field_prepositional_case" => "Параграфе"
                    ]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
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                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
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                      "field_accusative_case" => "Параграф"
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                      "field_nominative_case" => "Параграф"
                      "field_prepositional_case" => "Параграфе"
                    ]
                    "field_page_check_not_needed" => null
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                  ]
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                  #visible: []
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                    0 => "*"
                  ]
                }
              ]
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                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1138
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                0 => App\Models\Branch {#1137
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
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                    "created_at" => "2026-04-10 13:58:26"
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                    }
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1141
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                      ]
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            0 => "*"
          ]
        }
        3 => App\Models\Branch {#1131
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Задачи"
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            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1128
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "43"
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            "book" => Illuminate\Database\Eloquent\Collection {#1134
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              #escapeWhenCastingToString: false
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            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1147
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                0 => App\Models\Branch {#1146
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                        0 => App\Models\Book {#1049}
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                    }
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1150
                      #items: array:1 [
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                    0 => "*"
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      #escapeWhenCastingToString: false
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    "content" => Illuminate\Database\Eloquent\Collection {#1038
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        0 => App\Models\Element {#1098
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          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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            "id" => 1300268
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1089
              #items: array:1 [
                0 => App\Models\Edition {#1088
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #escapeWhenCastingToString: false
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                    "id" => 4962
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1043
                      #items: array:1 [
                        0 => App\Models\Term {#1080
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                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
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                          #withCount: []
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                          #attributes: array:6 [
                            "id" => 7006
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Алматыкітап баспасы"
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                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "almatykitap baspasy"
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                            "created_at" => "2026-04-10 13:58:26"
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                            "field_translit" => "almatykitap baspasy"
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                            0 => "*"
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                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "pasha"
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                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1082
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                    }
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                      #escapeWhenCastingToString: false
                    }
                    "field_process_formula" => "katex"
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            "task" => array:2 [
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              "type" => "task"
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            "text" => "<p><strong>3.</strong> (1)</p><p>Изобразите график четной функции $y=f(x)$, если $f(x)$ имеет период $T=4$, и на множестве $[-2;0]$ значения $f(x)$ задаются формулой $f(x)=x+2$.</p>"
            "img" => array:1 [
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                "name" => "3-1.jpg"
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                "width" => "1736"
                "height" => 344
                "path" => "/media/algebra_10/baspasy-u19/0-1-4zad/3-1.webp?ts=1753534483"
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            "text" => "<p><strong>3. (1)</strong></p><p>Для построения графика функции $y = f(x)$ воспользуемся последовательно всеми заданными условиями: определением функции на отрезке, ее четностью и периодичностью.</p><p><b>Шаг 1: Построение графика на отрезке $[-2; 0]$</b></p><p>По условию, на множестве $[-2; 0]$ функция задается формулой $f(x) = x + 2$. Это линейная функция, ее график — отрезок прямой. Для построения отрезка найдем координаты его концов. При $x = -2$ значение функции $f(-2) = -2 + 2 = 0$, что соответствует точке $(-2; 0)$. При $x = 0$ значение функции $f(0) = 0 + 2 = 2$, что соответствует точке $(0; 2)$. Соединив эти две точки, получаем график функции на отрезке $[-2; 0]$.</p><p><b>Шаг 2: Использование свойства четности</b></p><p>Функция $f(x)$ является четной, что означает выполнение равенства $f(-x) = f(x)$ для любого $x$ из области определения. График четной функции симметричен относительно оси ординат (оси $Oy$). Используя это свойство, мы можем построить график на отрезке $[0; 2]$, который симметричен отрезку $[-2; 0]$. Отрезок, соединяющий точки $(-2; 0)$ и $(0; 2)$, при симметричном отражении относительно оси $Oy$ перейдет в отрезок, соединяющий точки $(2; 0)$ и $(0; 2)$. Таким образом, на отрезке $[0; 2]$ функция задается формулой $f(x) = -x + 2$. Объединив графики на отрезках $[-2; 0]$ и $[0; 2]$, мы получаем основной фрагмент графика на отрезке $[-2; 2]$. Он имеет форму треугольника с вершиной в точке $(0; 2)$ и основанием на оси $Ox$ от $x = -2$ до $x = 2$. Длина этого отрезка $2 - (-2) = 4$, что соответствует периоду функции.</p><p><b>Шаг 3: Использование свойства периодичности</b></p><p>Функция $f(x)$ является периодической с периодом $T = 4$. Это означает, что $f(x+4) = f(x)$, и ее график повторяется через каждые 4 единицы вдоль оси $Ox$. Чтобы получить полный график функции, нужно "размножить" построенный на отрезке $[-2; 2]$ фрагмент влево и вправо с шагом, равным периоду $T=4$. Например, сдвинув фрагмент с $[-2; 2]$ на 4 единицы вправо, получим такой же "треугольник" на отрезке $[2; 6]$ с вершиной в точке $(4; 2)$. Аналогично, сдвигая фрагмент на 4 единицы влево, мы получим график на отрезке $[-6; -2]$ с вершиной в точке $(-4; 2)$, и так далее.</p><p><b>Итоговый вид графика</b></p><p>График функции $y=f(x)$ представляет собой бесконечную ломаную линию, состоящую из одинаковых "треугольников". Вершины (максимумы) этой ломаной находятся в точках с координатами $(4k; 2)$, где $k$ — любое целое число (..., $(-4; 2)$, $(0; 2)$, $(4; 2)$, ...). График пересекает ось абсцисс (нули функции) в точках с координатами $(2 + 4k; 0)$, где $k$ — любое целое число (..., $(-2; 0)$, $(2; 0)$, $(6; 0)$, ...).</p><p><strong>Ответ:</strong> График функции представляет собой ломаную линию, состоящую из повторяющихся "треугольных" фрагментов. На основном периоде $[-2; 2]$ график состоит из двух отрезков: отрезка, соединяющего точки $(-2; 0)$ и $(0; 2)$, и отрезка, соединяющего точки $(0; 2)$ и $(2; 0)$. Этот фрагмент, имеющий форму треугольника с вершиной в $(0;2)$, затем периодически повторяется по всей оси $Ox$ с периодом $T=4$.</p>"
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            "text" => "<p><strong>3. (1)</strong></p><p>Для построения графика функции $y = f(x)$ воспользуемся последовательно всеми заданными условиями: определением функции на отрезке, ее четностью и периодичностью.</p><p><b>Шаг 1: Построение графика на отрезке $[-2; 0]$</b></p><p>По условию, на множестве $[-2; 0]$ функция задается формулой $f(x) = x + 2$. Это линейная функция, ее график — отрезок прямой. Для построения отрезка найдем координаты его концов. При $x = -2$ значение функции $f(-2) = -2 + 2 = 0$, что соответствует точке $(-2; 0)$. При $x = 0$ значение функции $f(0) = 0 + 2 = 2$, что соответствует точке $(0; 2)$. Соединив эти две точки, получаем график функции на отрезке $[-2; 0]$.</p><p><b>Шаг 2: Использование свойства четности</b></p><p>Функция $f(x)$ является четной, что означает выполнение равенства $f(-x) = f(x)$ для любого $x$ из области определения. График четной функции симметричен относительно оси ординат (оси $Oy$). Используя это свойство, мы можем построить график на отрезке $[0; 2]$, который симметричен отрезку $[-2; 0]$. Отрезок, соединяющий точки $(-2; 0)$ и $(0; 2)$, при симметричном отражении относительно оси $Oy$ перейдет в отрезок, соединяющий точки $(2; 0)$ и $(0; 2)$. Таким образом, на отрезке $[0; 2]$ функция задается формулой $f(x) = -x + 2$. Объединив графики на отрезках $[-2; 0]$ и $[0; 2]$, мы получаем основной фрагмент графика на отрезке $[-2; 2]$. Он имеет форму треугольника с вершиной в точке $(0; 2)$ и основанием на оси $Ox$ от $x = -2$ до $x = 2$. Длина этого отрезка $2 - (-2) = 4$, что соответствует периоду функции.</p><p><b>Шаг 3: Использование свойства периодичности</b></p><p>Функция $f(x)$ является периодической с периодом $T = 4$. Это означает, что $f(x+4) = f(x)$, и ее график повторяется через каждые 4 единицы вдоль оси $Ox$. Чтобы получить полный график функции, нужно "размножить" построенный на отрезке $[-2; 2]$ фрагмент влево и вправо с шагом, равным периоду $T=4$. Например, сдвинув фрагмент с $[-2; 2]$ на 4 единицы вправо, получим такой же "треугольник" на отрезке $[2; 6]$ с вершиной в точке $(4; 2)$. Аналогично, сдвигая фрагмент на 4 единицы влево, мы получим график на отрезке $[-6; -2]$ с вершиной в точке $(-4; 2)$, и так далее.</p><p><b>Итоговый вид графика</b></p><p>График функции $y=f(x)$ представляет собой бесконечную ломаную линию, состоящую из одинаковых "треугольников". Вершины (максимумы) этой ломаной находятся в точках с координатами $(4k; 2)$, где $k$ — любое целое число (..., $(-4; 2)$, $(0; 2)$, $(4; 2)$, ...). График пересекает ось абсцисс (нули функции) в точках с координатами $(2 + 4k; 0)$, где $k$ — любое целое число (..., $(-2; 0)$, $(2; 0)$, $(6; 0)$, ...).</p><p><strong>Ответ:</strong> График функции представляет собой ломаную линию, состоящую из повторяющихся "треугольных" фрагментов. На основном периоде $[-2; 2]$ график состоит из двух отрезков: отрезка, соединяющего точки $(-2; 0)$ и $(0; 2)$, и отрезка, соединяющего точки $(0; 2)$ и $(2; 0)$. Этот фрагмент, имеющий форму треугольника с вершиной в $(0;2)$, затем периодически повторяется по всей оси $Ox$ с периодом $T=4$.</p>"
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№3 (с. 43)
Условие. №3 (с. 43)
скриншот условия
Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019, Часть 1, страница 43, номер 3, Условие

3. (1)

Изобразите график четной функции $y=f(x)$, если $f(x)$ имеет период $T=4$, и на множестве $[-2;0]$ значения $f(x)$ задаются формулой $f(x)=x+2$.

Решение 2 (rus). №3 (с. 43)

3. (1)

Для построения графика функции $y = f(x)$ воспользуемся последовательно всеми заданными условиями: определением функции на отрезке, ее четностью и периодичностью.

Шаг 1: Построение графика на отрезке $[-2; 0]$

По условию, на множестве $[-2; 0]$ функция задается формулой $f(x) = x + 2$. Это линейная функция, ее график — отрезок прямой. Для построения отрезка найдем координаты его концов. При $x = -2$ значение функции $f(-2) = -2 + 2 = 0$, что соответствует точке $(-2; 0)$. При $x = 0$ значение функции $f(0) = 0 + 2 = 2$, что соответствует точке $(0; 2)$. Соединив эти две точки, получаем график функции на отрезке $[-2; 0]$.

Шаг 2: Использование свойства четности

Функция $f(x)$ является четной, что означает выполнение равенства $f(-x) = f(x)$ для любого $x$ из области определения. График четной функции симметричен относительно оси ординат (оси $Oy$). Используя это свойство, мы можем построить график на отрезке $[0; 2]$, который симметричен отрезку $[-2; 0]$. Отрезок, соединяющий точки $(-2; 0)$ и $(0; 2)$, при симметричном отражении относительно оси $Oy$ перейдет в отрезок, соединяющий точки $(2; 0)$ и $(0; 2)$. Таким образом, на отрезке $[0; 2]$ функция задается формулой $f(x) = -x + 2$. Объединив графики на отрезках $[-2; 0]$ и $[0; 2]$, мы получаем основной фрагмент графика на отрезке $[-2; 2]$. Он имеет форму треугольника с вершиной в точке $(0; 2)$ и основанием на оси $Ox$ от $x = -2$ до $x = 2$. Длина этого отрезка $2 - (-2) = 4$, что соответствует периоду функции.

Шаг 3: Использование свойства периодичности

Функция $f(x)$ является периодической с периодом $T = 4$. Это означает, что $f(x+4) = f(x)$, и ее график повторяется через каждые 4 единицы вдоль оси $Ox$. Чтобы получить полный график функции, нужно "размножить" построенный на отрезке $[-2; 2]$ фрагмент влево и вправо с шагом, равным периоду $T=4$. Например, сдвинув фрагмент с $[-2; 2]$ на 4 единицы вправо, получим такой же "треугольник" на отрезке $[2; 6]$ с вершиной в точке $(4; 2)$. Аналогично, сдвигая фрагмент на 4 единицы влево, мы получим график на отрезке $[-6; -2]$ с вершиной в точке $(-4; 2)$, и так далее.

Итоговый вид графика

График функции $y=f(x)$ представляет собой бесконечную ломаную линию, состоящую из одинаковых "треугольников". Вершины (максимумы) этой ломаной находятся в точках с координатами $(4k; 2)$, где $k$ — любое целое число (..., $(-4; 2)$, $(0; 2)$, $(4; 2)$, ...). График пересекает ось абсцисс (нули функции) в точках с координатами $(2 + 4k; 0)$, где $k$ — любое целое число (..., $(-2; 0)$, $(2; 0)$, $(6; 0)$, ...).

Ответ: График функции представляет собой ломаную линию, состоящую из повторяющихся "треугольных" фрагментов. На основном периоде $[-2; 2]$ график состоит из двух отрезков: отрезка, соединяющего точки $(-2; 0)$ и $(0; 2)$, и отрезка, соединяющего точки $(0; 2)$ и $(2; 0)$. Этот фрагмент, имеющий форму треугольника с вершиной в $(0;2)$, затем периодически повторяется по всей оси $Ox$ с периодом $T=4$.

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