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

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

A

1)`pi/2`

B

2)`pi/2-1`

C

3)`pi/2`

D

4)`pi/2+1`

Text Solution

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The correct Answer is:
D
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