What is the integrating factor of $x\frac{dy}{dx} - y = x^{2}$?

Explanation

1. 01

   In the form $\frac{dy}{dx} + Py = Q$, $P = - \frac{1}{x}$.

2. 02

   The factor is $e^{\int P\,dx} = \frac{1}{x}$.