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int(1-(tan)x/2)/(1+(tan)x/2)dx =...

`int(1-(tan)x/2)/(1+(tan)x/2)dx =`

A

`2 log ((sec)x/2)`

B

`2 log [cos (pi/4 - x/2)]`

C

`2 log [sec (pi/4 - x/2)]`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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