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int (x^(2)-1)/(x^(2)+1)dx=...

`int (x^(2)-1)/(x^(2)+1)dx=`

A

x - `tan^(-1)x + c `

B

2x - `2tan^(-1)`x + c

C

x + `2tan^(-1)x + c `

D

`x - 2tan^(-1)` x + c

Text Solution

Verified by Experts

The correct Answer is:
D
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