Question

f(x)=4cosx*tgx
Найдите производную

Answer 1

Ответ:

$f(x) = 4 \cos(x) \times tg(x) = 4 \cos(x) \times \frac{ \sin(x) }{ \cos(x) } = 4 \sin(x)$

$f'(x) = 4 \cos(x)$