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Plotting graphs in three dimension

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  1. Dec 1, 2015 #1
    I have function1: x = n(cos((pi/2)-2pi/n))
    and function2: y = n(sin((pi/2)-2pi/n))

    my goal is to plot a graph where for the same value of n, the x and y are respectively the horizontal and vertical component of the point, this graph should preferably possible to create on a computer or a graphing calculator like ti-84. Someone told me that this thing can be benefited from thinking in three dimensions, not sure what that means.
     
  2. jcsd
  3. Dec 2, 2015 #2
    I think those are parametric equations. I'm not sure how it works on ti-84, but if you search on YouTube how to plot parametric equations on ti-84, I'm more than certain you'll find something.
     
  4. Dec 6, 2015 #3
    It might be easier to plot the curve in polar coordinates, which are:
    r=n
    theta=Pi/2 - 2Pi/n
     
  5. Dec 7, 2015 #4

    Svein

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  6. Dec 7, 2015 #5
    Thanks a lot, how and where did you do this?
     
  7. Dec 8, 2015 #6

    Svein

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    Excel. Tabulate x and y against n and ask for a "scatter plot".
     
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