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int(1+tan^2x)/(1-tan^2x)dx is equal to...

`int(1+tan^2x)/(1-tan^2x)dx` is equal to

A

`log((1-tanx)/(1+tanx))+C`

B

`log((1+tanx)/(1-tanx))+C`

C

`1/2log((1-tanx)/(1+tanx))+C`

D

`1/2log((1+tanx)/(1-tanx))+C`

Text Solution

Verified by Experts

The correct Answer is:
D
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