int(x^(2)-1)/((x^(2)+1)sqrt(x^(4)+1)) dx...

`int(x^(2)-1)/((x^(2)+1)sqrt(x^(4)+1))` dx is equal to -

A

`sec^(-1)((x^(2)+1)/(xsqrt2))+c`

B

`(1)/(sqrt2)sec^(-1)((x^(2)+1)/(sqrt2))+c`

C

`(1)/(sqrt2)sec^(-1)((x^(2)+1)/(xsqrt2))+c`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:

C

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