Solution of this non-linear equation

[eljose]

i,m stuck into solving this differential equation:

\frac{dy}{dx}f(y)=1 i,m trying to find an integrand factor but don,t know what to chose to solve it someone could help?..thanks...

EDIT:i,m interested in getting y=y(x) not x=x(y)

 

[arildno]

Let F(y) be an anti-derivative of f(y), i.e F'(y)=f(y).
Hence, it follows that:

F(y)=x+C, where C is an integration constant.

Locally, F should be invertible, i.e, you could in principle solve for y(x)

 

[GCT]

errr...have you considered whether it's separable?