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int(cos2x-1)/(cos2x+1)*dx=...

`int(cos2x-1)/(cos2x+1)*dx=`

A

`tanx-x+c`

B

`x+tanx+c`

C

`x-tanx+c`

D

`-x-cot x+c`

Text Solution

Verified by Experts

The correct Answer is:
C
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