What is the solution of the differential equation(in y) [math]f(x)\frac{\mathrm{d} y}{\mathrm{d} x}=yf'(x)-y^2[/math] where f(x) is differentiable?
What is the solution of differential equation [math]\frac{dy}{dx}= \frac{y^2+x^2+2xy+y+x} {y^2+x^2+2xy+2y+2x}?[/math]