Номер 13, страница 95, 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 2. Тригонометрические функции. Параграф 2. Графики функций. 2.6. Примеры. Задачи - номер 13, страница 95.

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        3 => App\Models\Branch {#1160
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                0 => App\Models\Branch {#1175
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            "field_page_start" => "92"
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            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1163}
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        }
        4 => App\Models\Branch {#1164
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "Задачи"
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            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1161
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            "field_page_start" => "93"
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            "book" => Illuminate\Database\Eloquent\Collection {#1172
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            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1185
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                0 => App\Models\Branch {#1184
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                  #connection: "mysql"
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1094
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                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1093
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            "task" => array:2 [
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            "text" => "<p><strong>13. (3)</strong> В условии указан вид функции $f(x)$, множество ее значений и период. Найдите значения параметров $p, q, r$, если:</p><p><strong>a)</strong> $f(x) = p \sin rx + q, E(f): [-2;4], T = \frac{\pi}{2};$</p><p><strong>б)</strong> $f(x) = (p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|, E(f): [6;10], T=6\pi.$</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "13-1.jpg"
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                "width" => "1693"
                "height" => 513
                "path" => "/media/algebra_10/baspasy-u19/0-2-2-6zad/13-1.webp?ts=1753534571"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 1300414
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1087}
            "task" => array:2 [
              "refs" => "1119731"
              "type" => "task"
            ]
            "text" => "<p><strong>13. (3)</strong> В условии указан вид функции $f(x)$, множество ее значений и период. Найдите значения параметров $p, q, r$, если:</p><p><strong>a)</strong> $f(x) = p \sin rx + q, E(f): [-2;4], T = \frac{\pi}{2};$</p><p><strong>б)</strong> $f(x) = (p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|, E(f): [6;10], T=6\pi.$</p>"
            "img" => array:1 [
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                "width" => "1693"
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                "path" => "/media/algebra_10/baspasy-u19/0-2-2-6zad/13-1.webp?ts=1753534571"
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        1 => App\Models\Element {#1089
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
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          #attributes: array:6 [
            "id" => 1551450
            "created_at" => "2026-04-10 13:58:26"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1081
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                0 => App\Models\Edition {#1090
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
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                  +preventsLazyLoading: false
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                  +exists: true
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                  #attributes: array:21 [
                    "id" => 5659
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 2 (rus)"
                    "field_order" => "3"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1086
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                    "field_content_type" => "free"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Gemini 2.5 Pro"
                    "field_moderator" => "tolik"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "2-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1082
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                    "field_comment" => null
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            "task" => array:2 [
              "refs" => "1119731"
              "type" => "task"
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            "text" => "<p><strong>а)</strong> $f(x) = p\sin(rx)+q$, $E(f):[-2;4]$, $T=\frac{\pi}{2}$</p><p>1. <i>Нахождение параметров $p$ и $q$ из множества значений $E(f)$.</i></p><p>Множество значений для функции вида $A\sin(kx)+B$ есть отрезок $[B - |A|, B + |A|]$. В нашем случае амплитуда равна $|p|$, а вертикальный сдвиг равен $q$.</p><p>Таким образом, минимальное и максимальное значения функции равны:</p><p>$\min(f) = q - |p| = -2$</p><p>$\max(f) = q + |p| = 4$</p><p>Получаем систему уравнений:</p><p>$\begin{cases} q + |p| = 4 \\ q - |p| = -2 \end{cases}$</p><p>Сложив два уравнения, получим:</p><p>$(q + |p|) + (q - |p|) = 4 + (-2)$</p><p>$2q = 2$</p><p>$q = 1$</p><p>Подставим значение $q=1$ в первое уравнение:</p><p>$1 + |p| = 4$</p><p>$|p| = 3$</p><p>Это означает, что $p=3$ или $p=-3$.</p><p>2. <i>Нахождение параметра $r$ из периода $T$.</i></p><p>Период функции вида $A\sin(kx)+B$ вычисляется по формуле $T = \frac{2\pi}{|k|}$. В нашем случае коэффициент при $x$ равен $r$.</p><p>По условию $T = \frac{\pi}{2}$, поэтому:</p><p>$\frac{2\pi}{|r|} = \frac{\pi}{2}$</p><p>Отсюда выразим $|r|$:</p><p>$|r| = \frac{2\pi}{\pi/2} = 4$</p><p>Это означает, что $r=4$ или $r=-4$.</p><p><strong>Ответ:</strong> $q=1$, $|p|=3$, $|r|=4$. Например, можно выбрать $p=3, q=1, r=4$.</p><p><strong>б)</strong> $f(x)=(p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|$, $E(f):[6;10]$, $T=6\pi$</p><p>1. <i>Нахождение параметров $p$ и $q$ из множества значений $E(f)$.</i></p><p>Функция имеет вид $A\cos(kx)+C$, где амплитуда равна $|A| = |p-2|$, а вертикальный сдвиг $C = |q+1|$.</p><p>Множество значений такой функции есть отрезок $[C-|A|; C+|A|]$.</p><p>$\min(f) = |q+1| - |p-2| = 6$</p><p>$\max(f) = |q+1| + |p-2| = 10$</p><p>Получаем систему уравнений:</p><p>$\begin{cases} |q+1| + |p-2| = 10 \\ |q+1| - |p-2| = 6 \end{cases}$</p><p>Сложив два уравнения, получим:</p><p>$(|q+1| + |p-2|) + (|q+1| - |p-2|) = 10 + 6$</p><p>$2|q+1| = 16$</p><p>$|q+1| = 8$</p><p>Отсюда следует, что $q+1=8$ или $q+1=-8$. Значит, $q=7$ или $q=-9$.</p><p>Подставим значение $|q+1|=8$ в первое уравнение системы:</p><p>$8 + |p-2| = 10$</p><p>$|p-2| = 2$</p><p>Отсюда следует, что $p-2=2$ или $p-2=-2$. Значит, $p=4$ или $p=0$.</p><p>2. <i>Нахождение параметра $r$ из периода $T$.</i></p><p>Период функции $T = \frac{2\pi}{|k|}$, где $k$ - коэффициент при $x$. В данном случае $k = 2r+\frac{1}{3}$.</p><p>По условию $T = 6\pi$, поэтому:</p><p>$\frac{2\pi}{|2r+\frac{1}{3}|} = 6\pi$</p><p>Разделим обе части на $2\pi$:</p><p>$\frac{1}{|2r+\frac{1}{3}|} = 3$</p><p>$|2r+\frac{1}{3}| = \frac{1}{3}$</p><p>Это уравнение эквивалентно двум случаям:</p><p>Случай 1: $2r+\frac{1}{3} = \frac{1}{3} \implies 2r = 0 \implies r=0$.</p><p>Случай 2: $2r+\frac{1}{3} = -\frac{1}{3} \implies 2r = -\frac{2}{3} \implies r=-\frac{1}{3}$.</p><p><strong>Ответ:</strong> Возможные значения параметров: $p \in \{0, 4\}$, $q \in \{7, -9\}$, $r \in \{0, -1/3\}$. Любая комбинация этих значений является решением, например, $p=4, q=7, r=0$.</p>"
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            "text" => "<p><strong>а)</strong> $f(x) = p\sin(rx)+q$, $E(f):[-2;4]$, $T=\frac{\pi}{2}$</p><p>1. <i>Нахождение параметров $p$ и $q$ из множества значений $E(f)$.</i></p><p>Множество значений для функции вида $A\sin(kx)+B$ есть отрезок $[B - |A|, B + |A|]$. В нашем случае амплитуда равна $|p|$, а вертикальный сдвиг равен $q$.</p><p>Таким образом, минимальное и максимальное значения функции равны:</p><p>$\min(f) = q - |p| = -2$</p><p>$\max(f) = q + |p| = 4$</p><p>Получаем систему уравнений:</p><p>$\begin{cases} q + |p| = 4 \\ q - |p| = -2 \end{cases}$</p><p>Сложив два уравнения, получим:</p><p>$(q + |p|) + (q - |p|) = 4 + (-2)$</p><p>$2q = 2$</p><p>$q = 1$</p><p>Подставим значение $q=1$ в первое уравнение:</p><p>$1 + |p| = 4$</p><p>$|p| = 3$</p><p>Это означает, что $p=3$ или $p=-3$.</p><p>2. <i>Нахождение параметра $r$ из периода $T$.</i></p><p>Период функции вида $A\sin(kx)+B$ вычисляется по формуле $T = \frac{2\pi}{|k|}$. В нашем случае коэффициент при $x$ равен $r$.</p><p>По условию $T = \frac{\pi}{2}$, поэтому:</p><p>$\frac{2\pi}{|r|} = \frac{\pi}{2}$</p><p>Отсюда выразим $|r|$:</p><p>$|r| = \frac{2\pi}{\pi/2} = 4$</p><p>Это означает, что $r=4$ или $r=-4$.</p><p><strong>Ответ:</strong> $q=1$, $|p|=3$, $|r|=4$. Например, можно выбрать $p=3, q=1, r=4$.</p><p><strong>б)</strong> $f(x)=(p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|$, $E(f):[6;10]$, $T=6\pi$</p><p>1. <i>Нахождение параметров $p$ и $q$ из множества значений $E(f)$.</i></p><p>Функция имеет вид $A\cos(kx)+C$, где амплитуда равна $|A| = |p-2|$, а вертикальный сдвиг $C = |q+1|$.</p><p>Множество значений такой функции есть отрезок $[C-|A|; C+|A|]$.</p><p>$\min(f) = |q+1| - |p-2| = 6$</p><p>$\max(f) = |q+1| + |p-2| = 10$</p><p>Получаем систему уравнений:</p><p>$\begin{cases} |q+1| + |p-2| = 10 \\ |q+1| - |p-2| = 6 \end{cases}$</p><p>Сложив два уравнения, получим:</p><p>$(|q+1| + |p-2|) + (|q+1| - |p-2|) = 10 + 6$</p><p>$2|q+1| = 16$</p><p>$|q+1| = 8$</p><p>Отсюда следует, что $q+1=8$ или $q+1=-8$. Значит, $q=7$ или $q=-9$.</p><p>Подставим значение $|q+1|=8$ в первое уравнение системы:</p><p>$8 + |p-2| = 10$</p><p>$|p-2| = 2$</p><p>Отсюда следует, что $p-2=2$ или $p-2=-2$. Значит, $p=4$ или $p=0$.</p><p>2. <i>Нахождение параметра $r$ из периода $T$.</i></p><p>Период функции $T = \frac{2\pi}{|k|}$, где $k$ - коэффициент при $x$. В данном случае $k = 2r+\frac{1}{3}$.</p><p>По условию $T = 6\pi$, поэтому:</p><p>$\frac{2\pi}{|2r+\frac{1}{3}|} = 6\pi$</p><p>Разделим обе части на $2\pi$:</p><p>$\frac{1}{|2r+\frac{1}{3}|} = 3$</p><p>$|2r+\frac{1}{3}| = \frac{1}{3}$</p><p>Это уравнение эквивалентно двум случаям:</p><p>Случай 1: $2r+\frac{1}{3} = \frac{1}{3} \implies 2r = 0 \implies r=0$.</p><p>Случай 2: $2r+\frac{1}{3} = -\frac{1}{3} \implies 2r = -\frac{2}{3} \implies r=-\frac{1}{3}$.</p><p><strong>Ответ:</strong> Возможные значения параметров: $p \in \{0, 4\}$, $q \in \{7, -9\}$, $r \in \{0, -1/3\}$. Любая комбинация этих значений является решением, например, $p=4, q=7, r=0$.</p>"
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№13 (с. 95)
Условие. №13 (с. 95)
скриншот условия
Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019, Часть 1, страница 95, номер 13, Условие

13. (3) В условии указан вид функции $f(x)$, множество ее значений и период. Найдите значения параметров $p, q, r$, если:

a) $f(x) = p \sin rx + q, E(f): [-2;4], T = \frac{\pi}{2};$

б) $f(x) = (p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|, E(f): [6;10], T=6\pi.$

Решение 2 (rus). №13 (с. 95)

а) $f(x) = p\sin(rx)+q$, $E(f):[-2;4]$, $T=\frac{\pi}{2}$

1. Нахождение параметров $p$ и $q$ из множества значений $E(f)$.

Множество значений для функции вида $A\sin(kx)+B$ есть отрезок $[B - |A|, B + |A|]$. В нашем случае амплитуда равна $|p|$, а вертикальный сдвиг равен $q$.

Таким образом, минимальное и максимальное значения функции равны:

$\min(f) = q - |p| = -2$

$\max(f) = q + |p| = 4$

Получаем систему уравнений:

$\begin{cases} q + |p| = 4 \\ q - |p| = -2 \end{cases}$

Сложив два уравнения, получим:

$(q + |p|) + (q - |p|) = 4 + (-2)$

$2q = 2$

$q = 1$

Подставим значение $q=1$ в первое уравнение:

$1 + |p| = 4$

$|p| = 3$

Это означает, что $p=3$ или $p=-3$.

2. Нахождение параметра $r$ из периода $T$.

Период функции вида $A\sin(kx)+B$ вычисляется по формуле $T = \frac{2\pi}{|k|}$. В нашем случае коэффициент при $x$ равен $r$.

По условию $T = \frac{\pi}{2}$, поэтому:

$\frac{2\pi}{|r|} = \frac{\pi}{2}$

Отсюда выразим $|r|$:

$|r| = \frac{2\pi}{\pi/2} = 4$

Это означает, что $r=4$ или $r=-4$.

Ответ: $q=1$, $|p|=3$, $|r|=4$. Например, можно выбрать $p=3, q=1, r=4$.

б) $f(x)=(p-2)\cos\left(\left(2r+\frac{1}{3}\right)x\right)+|q+1|$, $E(f):[6;10]$, $T=6\pi$

1. Нахождение параметров $p$ и $q$ из множества значений $E(f)$.

Функция имеет вид $A\cos(kx)+C$, где амплитуда равна $|A| = |p-2|$, а вертикальный сдвиг $C = |q+1|$.

Множество значений такой функции есть отрезок $[C-|A|; C+|A|]$.

$\min(f) = |q+1| - |p-2| = 6$

$\max(f) = |q+1| + |p-2| = 10$

Получаем систему уравнений:

$\begin{cases} |q+1| + |p-2| = 10 \\ |q+1| - |p-2| = 6 \end{cases}$

Сложив два уравнения, получим:

$(|q+1| + |p-2|) + (|q+1| - |p-2|) = 10 + 6$

$2|q+1| = 16$

$|q+1| = 8$

Отсюда следует, что $q+1=8$ или $q+1=-8$. Значит, $q=7$ или $q=-9$.

Подставим значение $|q+1|=8$ в первое уравнение системы:

$8 + |p-2| = 10$

$|p-2| = 2$

Отсюда следует, что $p-2=2$ или $p-2=-2$. Значит, $p=4$ или $p=0$.

2. Нахождение параметра $r$ из периода $T$.

Период функции $T = \frac{2\pi}{|k|}$, где $k$ - коэффициент при $x$. В данном случае $k = 2r+\frac{1}{3}$.

По условию $T = 6\pi$, поэтому:

$\frac{2\pi}{|2r+\frac{1}{3}|} = 6\pi$

Разделим обе части на $2\pi$:

$\frac{1}{|2r+\frac{1}{3}|} = 3$

$|2r+\frac{1}{3}| = \frac{1}{3}$

Это уравнение эквивалентно двум случаям:

Случай 1: $2r+\frac{1}{3} = \frac{1}{3} \implies 2r = 0 \implies r=0$.

Случай 2: $2r+\frac{1}{3} = -\frac{1}{3} \implies 2r = -\frac{2}{3} \implies r=-\frac{1}{3}$.

Ответ: Возможные значения параметров: $p \in \{0, 4\}$, $q \in \{7, -9\}$, $r \in \{0, -1/3\}$. Любая комбинация этих значений является решением, например, $p=4, q=7, r=0$.

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