Solution of differential equation \(\frac{x+y\frac{dy}{dx}}{y-x\frac{dy}{dx}}=\frac{x \cos^2 (x^2 + y^2)}{y^3}\) is equal to
1
\(\tan(x^2+y^2)=\frac{x^2}{y^2}+C\)
2
\(\cot(x^2+y^2)=\frac{x^2}{y^2}+C\)
3
\(\tan(x^2+y^2)=\frac{y^2}{x^2}+C\)
4
\(\cot(x^2+y^2)=\frac{y^2}{x^2}+C\)