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Homework Help: Solving ODE using mathematica

  1. Sep 8, 2008 #1
    1. The problem statement, all variables and given/known data
    I need to solve:
    [itex] a=-\frac{1}{y[t]^2}+Exp[-y[t]]y'[t]
    Using Mathematica. I have tried NDsolve and nothing.
    By the way a is acceleration,y is position,and y' is velocity.
    y[0]=1000000, y'[0]=0,y''[0]=0

    2. Relevant equations

    3. The attempt at a solution
    I have tried NDsolve and nothing.
    Totally at a loss. This is this right equation this problem of mine by the way[checked with the prof]. I just need to graph a[t],y[t], and v[t].
  2. jcsd
  3. Sep 10, 2008 #2


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    Science Advisor
    Homework Helper

    Hi Winzer! :smile:

    Do you mean [tex] a=-\frac{1}{y[t]^2}+e^{-y[t]}y'[t][/tex] ?

    That's y2e-y dy / (ay2 + 1) = dt

    (you need to type [noparse][tex] before and [/tex] after for LaTeX on this forum[/noparse] :wink:)
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