PolarPlot.
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| JavaView Snapshot | Mathematica Snapshot | 
| JavaView Applet | JavaView Lite Applet | 
| This plots an ellipse and a limacon on the same graph. | In[1]:= 
				<<Graphics`Graphics` In[2]:= gp = PolarPlot[{4/(2 + Cos[t]), 4Cos[t] - 2}, {t, 0, 2Pi}]; In[3]:= JavaView[gp]  | 
		
	
