Twoleaved Rose

This model is the level set of f(x,y) = (x^2 + y^2)^2 - a^2 (x^2-y^2)

The singularity at the origin for this function has four tangent directions.

This function can also be defined in the polar form as r^2 = a^2 sin(2 theta)


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Last modified: Sun Nov 26 16:29:03 1995
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