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Simultaneous Polynomials

  1. Jun 27, 2011 #1
    while attempting to solve for radius of a circular orbit, I ended up getting

    P(x)=0 and
    dP(x)/dx=0

    where P is a fourth order polynomial. I am not sure how can I solve it. Can someone shed some light on it.

    Thanks
     
  2. jcsd
  3. Jun 27, 2011 #2
    Could you please give more detail? What kind of polynomials are you talking about? Are there any initial or boundary conditions?
     
  4. Jun 27, 2011 #3
    Before I try to answer that, I just want to make sure that condition for circular orbit is

    dr/dt=0
    and d^2r/dt^2=0
     
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