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Homework Help: Curves homework

  1. Jun 28, 2010 #1
    1. The problem statement, all variables and given/known data

    Given the parametric equations,

    x=t^3-3t , y=t^2/(1+t^2)

    i am asked to sketch this curve.

    2. Relevant equations

    3. The attempt at a solution

    I am unsure how to get the cartesian equation here..
  2. jcsd
  3. Jun 28, 2010 #2


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    Science Advisor
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    Gold Member

    Re: curves

    You don't necessarily need the Cartesian equation. Just make a table of values:

    t | x | y

    List a bunch of values for t and plot the corresponding (x,y) values.

    [Edit] The interesting part of the curve is from about t = -1.3 to t = 1.3 or a little farther.
    Last edited: Jun 28, 2010
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