The length of a longest interval in which the function is increasing is

MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

The length of a longest interval in which the function

3\sin x-4\sin^3x

is increasing is (1)

\frac{\pi}{3}

(2)

\frac{\pi}{2}

(3)

\frac{3\pi}{2}

(4)

\pi