What is the integrating factor of $\frac{dx}{dy} + \frac{x}{y} = y^{2}$, linear in $x$?

Explanation

1. 01

   Here $x$ is the unknown: $\frac{dx}{dy} + Px = Q$ with $P = \frac{1}{y}$.

2. 02

   The factor is $e^{\int \frac{1}{y}dy} = y$.