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If int (x^(2)-a^(2))/(x^(2)+a^(2))dx=x+k...

If `int (x^(2)-a^(2))/(x^(2)+a^(2))dx=x+k "tan"^(-1)(x)/(a)+c` then k=

A

`2a^(2)`

B

`a^(2)`

C

`-2a`

D

`2a`

Text Solution

Verified by Experts

The correct Answer is:
c
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