Kernel: SageMath 9.5
Hearts for Valentine's Day
See the same code as a Sage worksheet: https://cocalc.com/drxyzzy/hearts/hearts-sageworksheet
See also: a rose, contributed by Andrzej Chrzeszczyk: https://cocalc.com/wstein/support/rose
Sources:
SageMath implict_plot3d
wikipedia cardioid as inverse curve of a parabola
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