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int (1+cos x)/(1-cos x)dx=...

`int (1+cos x)/(1-cos x)dx=`

A

`2 cot x//2 -x+c`

B

`-2cot x//2-x+c`

C

`-2 cot x//2+x+c`

D

none

Text Solution

Verified by Experts

The correct Answer is:
B
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