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Which equation for parabola coordinates

  1. Sep 14, 2008 #1
    What equation do you use to find any cordinate on a symetrical parabola?
    I've been hunting and hunting..
    I have the x value.

  2. jcsd
  3. Sep 14, 2008 #2
    Parabolic shapes are second order. That is

    y = A*x^2 + b

    If you only have x, then I would just assume A = 1 and b = 0.
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