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- {{short description|Plane curve: conic section}} [[File:Ellipse-conic.svg|thumb|An ellipse (red) obtained as the intersection of a [[cone]] with ...76 KB (12,397 words) - 07:11, 3 November 2020
- ...the Jacobi elliptic functions are a generalization which refer to other [[conic section]]s, the ellipse in particular. The relation to trigonometric functi ...42 KB (6,752 words) - 21:05, 28 October 2020
- The constant <math>\mu</math> curves are [[Confocal conic sections|confocal ellipses]] with focal length <math>c</math>; hence, these coordina ...41 KB (6,390 words) - 16:44, 19 November 2020