Quadruple Point

Author

Eric W. Weisstein
March 16, 2008

This notebook downloaded from http://mathworld.wolfram.com/notebooks/PlaneCurves/QuadruplePoint.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/QuadruplePoint.html.

©2008 Wolfram Research, Inc. except for portions noted otherwise

Example

<<Graphics`ImplicitPlot`

ImplicitPlot[(x^2+y^2)^3==4x^2y^2,{x,-1,1},AxesOrigin->{0,0},
PlotStyle->Red,Ticks->None,Epilog->{PointSize[.05],Point[{0,0}]}]