Focus and Directrix in a Quadratic Bézier Curve
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Any quadratic Bézier curve (with unit parameter ) represents a parabolic segment. This Demonstration illustrates the relationship between the disposition of the points and the vertex, locus, and directrix of the corresponding parabola.
Contributed by: Alexis Luengas Zimmer (October 2012)
Based on a program by: Isabelle Cattiaux-Huillard and Gudrun Albrecht
Open content licensed under CC BY-NC-SA
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