Предмет: Алгебра, автор: Heeey111

определить четность функций:f(x)=ctg(3x/4)
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Автор ответа: Artem112

$f(x)=\mathrm{ctg}\dfrac{3x}{4}$

$f(-x)=\mathrm{ctg}\dfrac{3\cdot(-x)}{4} =\mathrm{ctg}\left(-\dfrac{3x}{4}\right)=-\mathrm{ctg}\dfrac{3x}{4}=-f(x)$

Поскольку $f(-x)=-f(x)$ , то функция нечетная.

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определить четность функций:f(x)=ctg(3x/4) Помогите плиз

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определить четность функций:f(x)=ctg(3x/4)
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