Question

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

Answer 1

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