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Homework Help: REQ Solution to differential equation

  1. Mar 21, 2008 #1
    Find the solution to [tex]\frac{c}{y^2}+k=y''[/tex]

    I have not started with differential equations yet, so i hav eno idea if its possible to solve, but i stumbled upon it when investigating a physics idea i got. Thanks for any help!
    Last edited: Mar 21, 2008
  2. jcsd
  3. Mar 22, 2008 #2
    uhm, could anyone just leave a comment if its possible to solve or not?
  4. Mar 22, 2008 #3


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    Gold Member

    well we can first sketch a solution for y''=k which is y=kx^2/2+Ax+B
    but for: y''y^2=c I don't think there's an analytical answer.
  5. Mar 22, 2008 #4


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    Science Advisor
    Homework Helper

    Multiply by y' and you'll be able to integrate both terms of the new equation.
  6. Mar 23, 2008 #5
    How?? Cant make it work...
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