Evaluate : int tan x tan 2 x tan 3x dx...

Evaluate : `int tan x tan 2 x tan 3x dx`

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The correct Answer is:

`1/3 ln |sec 3x|-1/2 ln | sec 2x| - ln | sec x|+e`

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ARIHANT MATHS-INDEFINITE INTEGRAL -Exercise For Session 1

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int (e^(xloga)+e^(alogx))dx
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