The function $f(x)=4 \sin ^3 x-6 \sin ^2 x +12 \sin x+100$ is strictly

Question

decreasing in $\left[\frac{-\pi}{2}, \frac{\pi}{2}\right]$

decreasing in $\left[0, \frac{\pi}{2}\right]$

increasing in $\left(\pi, \frac{3 \pi}{2}\right)$

decreasing in $\left(\frac{\pi}{2}, \pi\right)$

Please login to view the detailed solution steps...