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Math Help - Help me !Parametric equation

  1. #1
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    Help me !Parametric equation

    Eliminate the Parameter to find a Cartesian equation of the curve

    a.  x=1+3t, y=2-t^{2}
    b. x=4cos\theta , y =5sin\theta   - \frac{\pi }{2}\leq 0\leq \frac{\pi }{2}
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  2. #2
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    Quote Originally Posted by butbi9x View Post
    Eliminate the Parameter to find a Cartesian equation of the curve

    a.  x=1+3t, y=2-t^{2}
    b. x=4cos\theta , y =5sin\theta   - \frac{\pi }{2}\leq 0\leq \frac{\pi }{2}
    a.

    x^2 = 1 + 6t + t^2

    so [-(x-1)^2]/9 + 2 = y



    b. (x/4)^2 + (y/5)^2 = 1
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