int (x^2 -1 )/ (x^3 sqrt(2x^4 - 2x^2 +1)...

`int (x^2 -1 )/ (x^3 sqrt(2x^4 - 2x^2 +1))dx` is equal to

A

(a) `2sqrt(2-2/x^(2)+1/x^(4))+c`

B

(b) `2sqrt(2+2/x^(2)+1/x^(4))+c`

C

(c) `1/2sqrt(2-2/x^(2)+1/x^(4))+c`

D

(d) None of these

Verified by Experts

The correct Answer is:

C

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