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int cos[2 cot^(-1) sqrt((1-x)/(1+x))] dx...

`int cos[2 cot^(-1) sqrt((1-x)/(1+x))] dx =`

A

`1/2 x^(2)`

B

`1/2 sin [2 cot^(-1)sqrt((1-x)/(1+x))]`

C

`-1/2 x^(2)`

D

minus 1/2 x + c

Text Solution

Verified by Experts

The correct Answer is:
C
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