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int(0)^(1) sqrt((1-x)/(1+x)dx=...

`int_(0)^(1) sqrt((1-x)/(1+x)dx=`

A

`(pi)/(2)-1`

B

`(pi)/(2)+1`

C

`pi-1`

D

`(3pi)/(2)`

Text Solution

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The correct Answer is:
A
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