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Homework Help: Parametric Equations of x^2-y^2=1

  1. Oct 29, 2006 #1
    given x^2-y^2=1 find the parametric equation...

    i have no clue where to start... it looks like a cirlce equation but i know that not right so what the hell?
     
  2. jcsd
  3. Oct 30, 2006 #2

    Hootenanny

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    What you have there is the equation for a hyperbola, I'm guesing you haven't met hyperbolas before?
     
  4. Oct 30, 2006 #3

    Office_Shredder

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    Do you know what hyperbolic sine and cosine are?
     
  5. Oct 30, 2006 #4

    HallsofIvy

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    One point: there is no such thing as the parametric equations for a curve. A single curve can have expression in many different parametric equations. As Office Shreder said, do you know hyperbolic sine and cosine? They have the nice property that cosh2x- sinh2x= 1
     
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