try this site:
http://www.wolframalpha.com/input/?i=plot+r+%3D+cos+5%CE%98+%2B+n+cos+%CE%98,+0+%E2%89%A4+%CE%98+%E2%89%A4+%CF%80,+n%3D1
Use a graphing utility to graph the polar equation shown below.
r = cos 5Θ + n cos Θ, 0 ≤ Θ ≤ π
For the integers n = -5 to n = 5. As you graph these equations, you should see the graph change shape from a heart to a bell.
I'm sorry. I'm having issues with graphing this.
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