JEE Advance - Mathematics (2006 - No. 14)
$$\int {{{{x^2} - 1} \over {{x^3}\sqrt {2{x^4} - 2{x^2} + 1} }}dx = } $$
$${{\sqrt {2{x^4} - 2{x^2} + 1} } \over {{x^2}}} + c$$
$${{\sqrt {2{x^4} - 2{x^2} + 1} } \over {{x^3}}} + c$$
$${{\sqrt {2{x^4} - 2{x^2} + 1} } \over {{x}}} + c$$
$${{\sqrt {2{x^4} - 2{x^2} + 1} } \over {{2x^2}}} + c$$
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