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The length of the longest interval in wh...

The length of the longest interval in which the function `3sinx-4sin^3x` is increasing is `pi/3` (b) `pi/2` (c) `(3pi)/2` (d) `pi`

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BANSAL-APPLICATION OF DERIVATIVE-All Questions
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  3. The length of the longest interval in which the function 3sinx-4sin^3x...

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