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Solution of this non-linear equation

  1. Aug 16, 2005 #1
    i,m stuck into solving this differential equation:

    [tex]\frac{dy}{dx}f(y)=1 [/tex] 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)
    Last edited: Aug 16, 2005
  2. jcsd
  3. Aug 16, 2005 #2


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    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)
  4. Aug 16, 2005 #3


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