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int(x^2-1)/(x^4+3x^2+1)dx(x >0) is...

`int(x^2-1)/(x^4+3x^2+1)dx(x >0)` is

A

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

B

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

C

`log_(e)((x+1/x-1)/(x+1/x+1))+c`

D

`log_(e)((x-1/x-1)/(x-1/x+1))+c`

Text Solution

Verified by Experts

The correct Answer is:
A
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