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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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