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  1. bronsona

    Figure-8 formula

    Glad to help! Sorry.. I should have said up front that the polar expression wouldn't work for your situation. But anyway, you figured it out.
  2. bronsona

    Figure-8 formula

    Interesting problem. Your hippopede was quite a good tip; don't know where you got that. Wolfram MathWorld site gives the following polar equation for it: r^2 = 4*b*(a - b*sin(theta)^2) where a and b are shape & position parameters. It can be shown that when a=b it traces 2 circles mirrored...

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