Cassini ovals

1 · John Cook · Jan. 20, 2023, 2:40 p.m.
An ellipse can be defined as the set of points such that the sum of the distances to two fixed points, the foci, has a constant value. A Cassini oval is the set of points such that the product of the distances to two foci has a constant value. You can write down an equation […] The post Cassini ovals first appeared on John D. Cook....