Номер 299, страница 154 - гдз по алгебре 10-11 класс учебник Колмогоров, Абрамов

Алгебра, 10-11 класс Учебник, авторы: Колмогоров Андрей Николаевич, Абрамов Александр Михайлович, Дудницын Юрий Павлович, издательство Просвещение, Москва, 2008, зелёного цвета

Авторы: Колмогоров А. Н., Абрамов А. М., Дудницын Ю. П.

Тип: Учебник

Издательство: Просвещение

Год издания: 2008 - 2026

Цвет обложки: зелёный, чёрный

ISBN: 978-5-09-019513-3

Рекомендовано Министерством образования и науки Российской Федерации

Алгебра и начала математического анализа

Глава 2. Производная и её применения. Параграф 6. Применения производной к исследованию функции - номер 299, страница 154.

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                    "field_description_bottom" => "<!--Текст в низу страницы--> <p> Выбирая в качестве онлайн-консультанта <strong>ГДЗ по алгебре 10-11 класс учебник Колмогоров, Абрамов, Дудницын (Просвещение)</strong>, каждый школьник может быть уверен, что справится со всеми учебными задачами текущего года. Помимо идеальной подготовки домашних заданий, подросток сможет самостоятельно осваивать новые темы, выполнять диагностику своих знаний и восполнять в них пробелы, повторять и закреплять изученный материал. При этом ребенку не понадобятся дополнительные консультации педагога. Со всеми вопросами и темами текущего учебного года он справится самостоятельно. </p> <h2> Что готовит школьникам алгебра в 10-11 классах </h2> <p> Алгебру можно назвать лидером среди всех учебных дисциплин по количеству изучаемых тем. В десятом и одиннадцатом классах все усложняется тем, что помимо новых разделов, ребятам предстоит огромная работа по повторению ранее пройденного материала, ведь в конце года всех их ждет сложнейшее испытание - итоговый экзамен по предмету. Но его результат будет зависеть от того, насколько хорошо ребята освоят следующие разделы: </p> <ol> <li>Тригонометрические функции.</li> <li>Производная и её применения.</li> <li>Первообразная и интеграл.</li> <li>Показательная и логарифмическая функции.</li> <li>Действительные числа.</li> <li>Функции. </ol> <p> Материал очень насыщенный и достаточно сложный. При этом недостаточно будет просто вызубрить массу формул и правил. Простое заучивание - это лишь часть работы. Главное научиться применять полученные знания на практике. Именно с этим у большинства ребят возникают проблемы. Работа вместе с <strong>решебником по алгебре за 10-11 классы авторов Колмогорова, Абрамова, Дудницына</strong> позволит преодолеть все препятствия в учебе. Детально расписанная в пособии информация поможет прекрасно понять материал и научиться применять теорию на практике. </p> <h2> Что представляет собой решебник к учебнику Колмогорова (Просвещение) </h2> <p> Верные ответы — это далеко не все, что содержится во вспомогательном пособии. Сборник с готовыми домашними заданиями структурно и по содержанию полностью копирует учебник под редакцией Колмогорова и включает: </p> <ul> <li>тематические параграфы с соответствующими им упражнениями;</li> <li>номера к разделу «Задачи на повторение»;</li> <li>задачи повышенной трудности.</li> </ul> <p> Каждое решение расписано максимально подробно, с выкладками по теории, графиками и выводами. В особо сложных вопросах авторы дают дополнительные комментарии. Материал изложен простым языком, доступным для понимания абсолютно всем старшеклассникам. Электронный формат существенно облегчает работу с пособием, позволяет выбрать удобный ритм для учебы, экономит время и силы ребенка. </p> <h2> Зачем использовать ГДЗ по алгебре </h2> <p> Даже в выпускном классе нельзя опускать руки, если вдруг освоение алгебры не задалось. Еще есть время поправить свои оценки и знания. Главное правильно распределить свое время, найти верного помощника и вернуть интерес к предмету. Решебник позволит все эти элементы совместить воедино для достижения блестящего результата. Предложенное пособие станет тем консультантом, который даст возможность подростку быстро и качественно выполнить домашнее задание. Это в свою очередь позволит вернуть интерес к предмету и, что немало важно, выкроить ценные часы на отдых. Главное - не прибегать к списыванию готовых решений, ведь простое копирование поможет лишь на время, однако на первой же проверочной в классе обман вскроется. Если обращаться к справочнику для самопроверки и разбора сложных задач, то отличные оценки не заставят себя долго ждать. </p>"
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            "text" => "<p><strong>а)</strong> Для того чтобы доказать, что функция возрастает на множестве $R$, необходимо показать, что ее производная $f'(x) > 0$ для всех $x \in R$.<br>Найдем производную функции $f(x) = 2x - \cos x$:<br>$f'(x) = (2x - \cos x)' = (2x)' - (\cos x)' = 2 - (-\sin x) = 2 + \sin x$.<br>Известно, что область значений функции синус: $-1 \le \sin x \le 1$.<br>Тогда мы можем оценить значения производной $f'(x)$:<br>Минимальное значение: $2 + (-1) = 1$.<br>Максимальное значение: $2 + 1 = 3$.<br>Таким образом, $1 \le f'(x) \le 3$ для всех $x \in R$.<br>Поскольку $f'(x) \ge 1$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>б)</strong> Найдем производную функции $f(x) = x^5 + 4x$:<br>$f'(x) = (x^5 + 4x)' = (x^5)' + (4x)' = 5x^4 + 4$.<br>Выражение $x^4$ всегда неотрицательно, так как показатель степени четный: $x^4 \ge 0$ для любого $x \in R$.<br>Следовательно, $5x^4 \ge 0$.<br>Тогда для производной $f'(x)$ получаем:<br>$f'(x) = 5x^4 + 4 \ge 0 + 4 = 4$.<br>Поскольку $f'(x) \ge 4 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>в)</strong> Найдем производную функции $f(x) = \sin x + \frac{3x}{2}$:<br>$f'(x) = (\sin x + \frac{3x}{2})' = (\sin x)' + (\frac{3x}{2})' = \cos x + \frac{3}{2}$.<br>Известно, что область значений функции косинус: $-1 \le \cos x \le 1$.<br>Тогда мы можем оценить значения производной $f'(x)$:<br>Минимальное значение: $-1 + \frac{3}{2} = \frac{1}{2}$.<br>Максимальное значение: $1 + \frac{3}{2} = \frac{5}{2}$.<br>Таким образом, $\frac{1}{2} \le f'(x) \le \frac{5}{2}$ для всех $x \in R$.<br>Поскольку $f'(x) \ge \frac{1}{2}$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>г)</strong> Найдем производную функции $f(x) = 2x^3 + x - 5$:<br>$f'(x) = (2x^3 + x - 5)' = (2x^3)' + (x)' - (5)' = 6x^2 + 1$.<br>Выражение $x^2$ всегда неотрицательно, так как показатель степени четный: $x^2 \ge 0$ для любого $x \in R$.<br>Следовательно, $6x^2 \ge 0$.<br>Тогда для производной $f'(x)$ получаем:<br>$f'(x) = 6x^2 + 1 \ge 0 + 1 = 1$.<br>Поскольку $f'(x) \ge 1 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p>"
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            "text" => "<p><strong>а)</strong> Для того чтобы доказать, что функция возрастает на множестве $R$, необходимо показать, что ее производная $f'(x) > 0$ для всех $x \in R$.<br>Найдем производную функции $f(x) = 2x - \cos x$:<br>$f'(x) = (2x - \cos x)' = (2x)' - (\cos x)' = 2 - (-\sin x) = 2 + \sin x$.<br>Известно, что область значений функции синус: $-1 \le \sin x \le 1$.<br>Тогда мы можем оценить значения производной $f'(x)$:<br>Минимальное значение: $2 + (-1) = 1$.<br>Максимальное значение: $2 + 1 = 3$.<br>Таким образом, $1 \le f'(x) \le 3$ для всех $x \in R$.<br>Поскольку $f'(x) \ge 1$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>б)</strong> Найдем производную функции $f(x) = x^5 + 4x$:<br>$f'(x) = (x^5 + 4x)' = (x^5)' + (4x)' = 5x^4 + 4$.<br>Выражение $x^4$ всегда неотрицательно, так как показатель степени четный: $x^4 \ge 0$ для любого $x \in R$.<br>Следовательно, $5x^4 \ge 0$.<br>Тогда для производной $f'(x)$ получаем:<br>$f'(x) = 5x^4 + 4 \ge 0 + 4 = 4$.<br>Поскольку $f'(x) \ge 4 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>в)</strong> Найдем производную функции $f(x) = \sin x + \frac{3x}{2}$:<br>$f'(x) = (\sin x + \frac{3x}{2})' = (\sin x)' + (\frac{3x}{2})' = \cos x + \frac{3}{2}$.<br>Известно, что область значений функции косинус: $-1 \le \cos x \le 1$.<br>Тогда мы можем оценить значения производной $f'(x)$:<br>Минимальное значение: $-1 + \frac{3}{2} = \frac{1}{2}$.<br>Максимальное значение: $1 + \frac{3}{2} = \frac{5}{2}$.<br>Таким образом, $\frac{1}{2} \le f'(x) \le \frac{5}{2}$ для всех $x \in R$.<br>Поскольку $f'(x) \ge \frac{1}{2}$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p><p><strong>г)</strong> Найдем производную функции $f(x) = 2x^3 + x - 5$:<br>$f'(x) = (2x^3 + x - 5)' = (2x^3)' + (x)' - (5)' = 6x^2 + 1$.<br>Выражение $x^2$ всегда неотрицательно, так как показатель степени четный: $x^2 \ge 0$ для любого $x \in R$.<br>Следовательно, $6x^2 \ge 0$.<br>Тогда для производной $f'(x)$ получаем:<br>$f'(x) = 6x^2 + 1 \ge 0 + 1 = 1$.<br>Поскольку $f'(x) \ge 1 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.<br>Ответ: Доказано, что функция возрастает на множестве $R$.</p>"
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№299 (с. 154)
Условие. №299 (с. 154)
скриншот условия
Алгебра, 10-11 класс Учебник, авторы: Колмогоров Андрей Николаевич, Абрамов Александр Михайлович, Дудницын Юрий Павлович, издательство Просвещение, Москва, 2008, зелёного цвета, страница 154, номер 299, Условие

299. Докажите, что функция $f$ возрастает на множестве $R$:

a) $f(x) = 2x - \cos x;$

б) $f(x) = x^5 + 4x;$

в) $f(x) = \sin x + \frac{3x}{2};$

г) $f(x) = 2x^3 + x - 5.$

Решение 1. №299 (с. 154)
Алгебра, 10-11 класс Учебник, авторы: Колмогоров Андрей Николаевич, Абрамов Александр Михайлович, Дудницын Юрий Павлович, издательство Просвещение, Москва, 2008, зелёного цвета, страница 154, номер 299, Решение 1
Решение 2. №299 (с. 154)
Алгебра, 10-11 класс Учебник, авторы: Колмогоров Андрей Николаевич, Абрамов Александр Михайлович, Дудницын Юрий Павлович, издательство Просвещение, Москва, 2008, зелёного цвета, страница 154, номер 299, Решение 2
Решение 3. №299 (с. 154)
Алгебра, 10-11 класс Учебник, авторы: Колмогоров Андрей Николаевич, Абрамов Александр Михайлович, Дудницын Юрий Павлович, издательство Просвещение, Москва, 2008, зелёного цвета, страница 154, номер 299, Решение 3
Решение 5. №299 (с. 154)

а) Для того чтобы доказать, что функция возрастает на множестве $R$, необходимо показать, что ее производная $f'(x) > 0$ для всех $x \in R$.
Найдем производную функции $f(x) = 2x - \cos x$:
$f'(x) = (2x - \cos x)' = (2x)' - (\cos x)' = 2 - (-\sin x) = 2 + \sin x$.
Известно, что область значений функции синус: $-1 \le \sin x \le 1$.
Тогда мы можем оценить значения производной $f'(x)$:
Минимальное значение: $2 + (-1) = 1$.
Максимальное значение: $2 + 1 = 3$.
Таким образом, $1 \le f'(x) \le 3$ для всех $x \in R$.
Поскольку $f'(x) \ge 1$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.
Ответ: Доказано, что функция возрастает на множестве $R$.

б) Найдем производную функции $f(x) = x^5 + 4x$:
$f'(x) = (x^5 + 4x)' = (x^5)' + (4x)' = 5x^4 + 4$.
Выражение $x^4$ всегда неотрицательно, так как показатель степени четный: $x^4 \ge 0$ для любого $x \in R$.
Следовательно, $5x^4 \ge 0$.
Тогда для производной $f'(x)$ получаем:
$f'(x) = 5x^4 + 4 \ge 0 + 4 = 4$.
Поскольку $f'(x) \ge 4 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.
Ответ: Доказано, что функция возрастает на множестве $R$.

в) Найдем производную функции $f(x) = \sin x + \frac{3x}{2}$:
$f'(x) = (\sin x + \frac{3x}{2})' = (\sin x)' + (\frac{3x}{2})' = \cos x + \frac{3}{2}$.
Известно, что область значений функции косинус: $-1 \le \cos x \le 1$.
Тогда мы можем оценить значения производной $f'(x)$:
Минимальное значение: $-1 + \frac{3}{2} = \frac{1}{2}$.
Максимальное значение: $1 + \frac{3}{2} = \frac{5}{2}$.
Таким образом, $\frac{1}{2} \le f'(x) \le \frac{5}{2}$ для всех $x \in R$.
Поскольку $f'(x) \ge \frac{1}{2}$, то $f'(x) > 0$ для всех $x \in R$. Это означает, что функция $f(x)$ строго возрастает на всей числовой прямой.
Ответ: Доказано, что функция возрастает на множестве $R$.

г) Найдем производную функции $f(x) = 2x^3 + x - 5$:
$f'(x) = (2x^3 + x - 5)' = (2x^3)' + (x)' - (5)' = 6x^2 + 1$.
Выражение $x^2$ всегда неотрицательно, так как показатель степени четный: $x^2 \ge 0$ для любого $x \in R$.
Следовательно, $6x^2 \ge 0$.
Тогда для производной $f'(x)$ получаем:
$f'(x) = 6x^2 + 1 \ge 0 + 1 = 1$.
Поскольку $f'(x) \ge 1 > 0$ для всех $x \in R$, функция $f(x)$ строго возрастает на всей числовой прямой.
Ответ: Доказано, что функция возрастает на множестве $R$.

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