WB JEE 2017 | Differential Equations Question 52 | Mathematics

WB JEE 2017

MCQ (Single Correct Answer)

-0.25

The integrating factor of the first order differential equation $${x^2}({x^2} - 1){{dy} \over {dx}} + x({x^2} + 1)y = {x^2} - 1$$ is

e^x

$$x - {1 \over x}$$

$$x + {1 \over x}$$

$${1 \over {{x^2}}}$$

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