MCQ
The integrating factor of - $x \frac{dy}{dx} - 2y = x^2 + \sin \left( {\frac{1}{{{x^2}}}} \right)$ is
  • A
    $x^2$
  • $\frac{1}{x^2}$
  • C
    $-x^2$
  • D
    None

Answer

Correct option: B.
$\frac{1}{x^2}$
b

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