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d/(dx)[((tan^2 2x-tan^2x)/(1-tan^2 2xtan...

`d/(dx)[((tan^2 2x-tan^2x)/(1-tan^2 2xtan^2x))cot3x]=`

A

`sec2x*tanx`

B

`tan3x*tanx`

C

`sec^(2)x`

D

`secx*tanx`

Text Solution

Verified by Experts

The correct Answer is:
C
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