Question:medium

The length of the longest interval, in which $f(x)=3\sin x - 4\sin^3 x$ is increasing, is

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Always try to convert expressions using standard identities first.
Updated On: Apr 23, 2026
  • $\frac{\pi}{3}$
  • $\frac{\pi}{2}$
  • $\frac{3\pi}{2}$
  • $\pi$
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The Correct Option is A

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