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BIQUARTIC



Biquartics are the algebraic curves of degree 8.
 

Examples: toroids, Cayley's ovals, triellipses, hearts of Raphaël Laporte and of Pierre Daniel.
 
 
A nice biquartic with a triple point where the tangents coincide, suggested by Carlos Sacré: .
Cartesian equation: .

© Robert FERRÉOL  2017