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int(dx)/(x+sqrt(a^2-x^2)) is equal to...

`int(dx)/(x+sqrt(a^2-x^2))` is equal to

A

`1/2sin^-1(x/a)+Insqrt(x+sqrt(a^2-x^2))+c`

B

`1/2sin^-1(x/a)+Insqrt(xsqrt(a^2-x^2))+c`

C

`1/2sin^-1(x/a)+Insqrt(a+sqrt(a^2-x^2))+c`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
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