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Solution to a differential equation required

  1. Aug 1, 2007 #1
    Hi, I am new here but I hope you can help me.

    I have a problem involving a differential equation

    dy/dt = V*sin(y)

    if V is the rocket equation V= Ve *ln(M0/M(t))

    and I know the value of V at time t

    how do I solve to find y?
  2. jcsd
  3. Aug 1, 2007 #2
    You should separate the variables.

    [tex]\frac{dy}{dt} = V\ sin{y}[/tex]

    [tex]\frac{dy}{\sin{y}} = V dt[/tex]

    [tex]\int \frac{dy}{\sin{y}} = \int V dt[/tex]

    You should be able to take it from here. Good luck.
  4. Aug 1, 2007 #3

    Better open a book boy. And study. HARD.
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