Question

Необходимо найти производную от $f(x)=cos^2x+sinx$

Answer 1

$f(x) = \cos^{2} (x) + \sin(x) \\ \frac{d}{dx} ( \cos {}^{2} (x) + \sin(x) ) = 2 \cos(x) \times ( - \sin(x) ) + \cos(x) = - \sin(2x) + \cos(x)$