F(x)=5 корень 5 степени под корнем х в 3 степени,найти производную. f(x)=7 корень 7 степени под корнем х в 3 степени,найти производную. f(x)=7 корень 7 степени под корнем х в 6 степени,найти производную.

Лебедев Дмитрий Сергеевич

Учитель математики

Проверено учителем

Производные заданных функций имеют вид: F(x)=3x25cap F prime open paren x close paren equals the fraction with numerator 3 and denominator the fifth root of x squared end-root end-fraction , для второй функции f(x)=3x47f prime of x equals the fraction with numerator 3 and denominator the seventh root of x to the fourth power end-root end-fraction и для третьей функции f(x)=6x7f prime of x equals the fraction with numerator 6 and denominator the seventh root of x end-root end-fraction . Шаг 1: Преобразование функций в степенной вид Для нахождения производной удобнее представить радикалы в виде дробной степени, используя тождество xmn=xmnthe n-th root of x to the m-th power end-root equals x raised to the m over n end-fraction power .

  1. F(x)=5x35cap F open paren x close paren equals 5 x raised to the three-fifths power f(x)=7x37f of x equals 7 x raised to the three-sevenths power f(x)=7x67f of x equals 7 x raised to the six-sevenths power

Шаг 2: Применение правила дифференцирования Воспользуемся правилом производной степенной функции (cxn)=cnxn1open paren c x to the n-th power close paren prime equals c center dot n center dot x raised to the n minus 1 power.

  1. Для первой функции: F(x)=535x351=3x25cap F prime open paren x close paren equals 5 center dot three-fifths x raised to the three-fifths minus 1 power equals 3 x raised to the negative two-fifths power Для второй функции: f(x)=737x371=3x47f prime of x equals 7 center dot three-sevenths x raised to the three-sevenths minus 1 power equals 3 x raised to the negative four-sevenths power Для третьей функции: f(x)=767x671=6x17f prime of x equals 7 center dot six-sevenths x raised to the six-sevenths minus 1 power equals 6 x raised to the negative one-seventh power

Шаг 3: Упрощение выражения Переведем результат обратно в форму корня, используя свойство xmn=1xmnx raised to the negative m over n end-fraction power equals the fraction with numerator 1 and denominator the n-th root of x to the m-th power end-root end-fraction .

  1. F(x)=3x25=3x25cap F prime open paren x close paren equals the fraction with numerator 3 and denominator x raised to the two-fifths power end-fraction equals the fraction with numerator 3 and denominator the fifth root of x squared end-root end-fraction f(x)=3x47=3x47f prime of x equals the fraction with numerator 3 and denominator x raised to the four-sevenths power end-fraction equals the fraction with numerator 3 and denominator the seventh root of x to the fourth power end-root end-fraction f(x)=6x17=6x7f prime of x equals the fraction with numerator 6 and denominator x raised to the one-seventh power end-fraction equals the fraction with numerator 6 and denominator the seventh root of x end-root end-fraction

Ответ: F(x)=3x25bold cap F prime open paren bold x close paren equals the fraction with numerator 3 and denominator the fifth root of bold x squared end-root end-fraction , f(x)=3x47bold f prime open paren bold x close paren equals the fraction with numerator 3 and denominator the seventh root of bold x to the fourth power end-root end-fraction и f(x)=6x7bold f prime open paren bold x close paren equals the fraction with numerator 6 and denominator the seventh root of bold x end-root end-fraction . Нужно ли вам найти значение этих производных в конкретной точке?

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