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Math Help - Polar Curve Graphing - Urgent

  1. #1
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    Post Polar Curve Graphing - Urgent

    Hey guys, got a polar curve symmetry problem, any help appreciated.

    1. Test the polar curve r = 2cosu - 1. Then accurately graph. <-- the problem is, I don't know for sure if it's r = 2cos(u - 1) or r = 2cos(u) - 1. Sorry about that.
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  2. #2
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    Quote Originally Posted by leviathanwave View Post
    Hey guys, got a polar curve symmetry problem, any help appreciated.

    1. Test the polar curve r = 2cosu - 1. Then accurately graph. <-- the problem is, I don't know for sure if it's r = 2cos(u - 1) or r = 2cos(u) - 1. Sorry about that.
    Hello,

    I've attached a diagram of both curves:
    1. the first equation is a circle (red)
    2. the second equation is some kind of a cycloid curve (black).

    From your post I assume that you have to examine some symmetry properties. So it looks like as if #2 is a very good candidate for such an examination.

    EB
    Attached Thumbnails Attached Thumbnails Polar Curve Graphing - Urgent-zwei_cykloide.gif  
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