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Homework Help: Exact equation?

  1. Jan 30, 2005 #1
    Tough differential equation

    Hello!

    I'm having real trouble with this differential equation. I don't want you to solve it for me. Just give me a hint what I should do.

    (1+7x+6y+3x^2+4xy+5y^2)dx+2(1+2x+5y)dy=0

    Obviously it is not exact. But I'm trying to find an integrating factor..
    May be I should use another technique.
     
    Last edited: Jan 30, 2005
  2. jcsd
  3. Jan 30, 2005 #2
    It's a tough one isn't it?
     
  4. Jan 30, 2005 #3
    I think it has no simple solution. Maple gave up after a while...
     
  5. Jan 30, 2005 #4
    well, I am suposed to know how to solve it. THat was last year's exam question!
     
  6. Jan 30, 2005 #5

    dextercioby

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    Homework Helper

    Do u at least know what u were supposed to to be doing??I mean the theory behind (non)exact ODE??

    Daniel.
     
  7. Jan 30, 2005 #6
    I don't understand your question. I've been trying all techniques I learned (homogeneous, isobaric equation, exact equations, integrating factor,...). But I can't solve it.
     
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