Question Number 135401 by rs4089 last updated on 12/Mar/21
$${find}\:{integrating}\:{factor}\:{or}\:{this}\:{diff}. \\ $$$${equ}^{{n}} \:{for}\:{which}\:{it}\:{become}\:{exact}\: \\ $$$$\left({x}^{\mathrm{2}} â{xy}â{y}^{\mathrm{2}} \right){dy}+{y}^{\mathrm{2}} {dx}=\mathrm{0} \\ $$