Question

срочно!!!!.................!!!!​

Answer 1

$y = 2 \cos(x) \\ y' = 2 \times ( - \sin(x) ) = - 2 \sin(x) \\ x_{o} = \frac{\pi}{3} \\ y' = - 2 \sin( \frac{\pi}{3} ) = - 2 \times \frac{ \sqrt{3} }{2} = - \sqrt{3}$

Ответ: 3)