Butterfly polar curves

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/ButterflyMD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/ButterflyMD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/ButterflyMD.html[/url]

Інформація: Butterfly polar curves