# Find the solution of differential equation : $\large\frac{dy}{dx}=\frac{x^2+y^2}{xy}$
$(a)\;(\frac{y}{x})^2= 2\log y +c\\ (b)\;(\frac{y}{x})^2= 2\log x +c \\ (c)\;(\frac{x}{y})^2= 2\log y +c \\ (d)\;(\frac{x}{y})^2= 2\log x +c$