int(0)^(a)(x)/(sqrt(a^(2)+x^(2)))dx...

`int_(0)^(a)(x)/(sqrt(a^(2)+x^(2)))dx`

A

`a(sqrt(2)-1)`

B

`a(1-sqrt(2))`

C

`a(1+sqrt(2))`

D

`2asqrt(3)`

Verified by Experts

The correct Answer is:

A

int(0)^(a)(x)/(sqrt(a^(2)+x^(2)))dx
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