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

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

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
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