Question

Помогите прошу))) Срочно!

Answer 1

$f(x)=sin x-cos x \ f'(x)=cos x+sin x$

$f(x)=tg x-4ctg x \ f'(x)= frac{1}{cos^2x} + frac{4}{sin^2x}$

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

$f(x)=6cos x-1,2x \ f'(x)=-6sin x-1,2$