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B Cartesian to Polar

  1. Nov 3, 2016 #1
    Can y=x^2-1 or y=1-x^2 be converted to polar functions? I was attempting it and kept running into problems. If it's not possible, why not?
     
  2. jcsd
  3. Nov 4, 2016 #2

    lurflurf

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    Just substitute
    x=r*cos(t)
    x=r*Sin(t)

    This gives an implicit polar equation. If you like, solve for r to get an explicit polar equation.
     
  4. Nov 4, 2016 #3
    I was having trouble expressing it explicitly and solving for r or t
     
  5. Nov 4, 2016 #4

    lurflurf

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    whate have you tried? It is quadratic in r, either use the quadratic formula or complete the square.
     
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