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KISS CURVE
Homemade name. It can be made more precise: puckering, duckface! |
Cartesian parametrization: Cartesian equation: Rational sextic. |
The rotation of this curve around Oz combined
with a scaling of factor 1/2 in the direction Oz yields a flying
saucer.
Parametrization: |
![]() |
The image by a dilatation of rapport 1/2 |
![]() Nephroid (in blue) and its inverse (in red) |
See also the mouth
and the heart.
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© Robert FERRÉOL
2020