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Homework Help: ODE problem: 3x^2 y dx + (x^3 + 2y)dy = 0

  1. Feb 26, 2006 #1
    I have two ODE with which I cannot to slove;


    I tried to change of variable y=v*x, but I still cannot find a way to solve it.

    the second is:


    here I have no idea

    thank you
  2. jcsd
  3. Feb 26, 2006 #2


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    They are exact diff equ. Have you not seen how to solve such ode's?
  4. Feb 26, 2006 #3


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    Surely you know other techniques for solving ODE? This problem is tailor-made for one of them.
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