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ifI=int0^a sqrt((a-x)/(a+x))dx, agt0 The...

if`I=int_0^a sqrt((a-x)/(a+x))dx, agt0` Then I equals

A

`1/2(a-pi/2)`

B

`a/2(pi-1)`

C

`1/sqrt2a(pi-1)`

D

`a(pi/2-1)`

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The correct Answer is:
D
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