Tetrachloroethylene (data page): Difference between revisions
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en>Bgwhite →Distillation data: WP:CHECKWIKI error fix #34. Do general fixes and cleanup if needed. - using AWB |
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[[Image:Bifolium.svg|right|thumb|280px|Bifolium for <math>a=1.</math>]] | |||
:''For the [[brachiopod]] [[genus]], see ''[[Bifolium (brachiopod)]]''. | |||
The '''bifolium''' is a [[quartic plane curve]] of the equation: | |||
:<math>(x^2 + y^2)^2 = ax^2y.\,</math> | |||
In [[polar coordinates]], its equation is | |||
:<math>\rho = a \sin\theta \, \cos^2\theta.</math> | |||
==External links== | |||
* http://www.geom.uiuc.edu/~fjw/pisces/docs/models/Bifolium.html | |||
*[http://mathworld.wolfram.com/Bifolium.html Bifolium at MathWorld] | |||
[[Category:Curves]] | |||
[[Category:Algebraic curves]] |
Latest revision as of 23:33, 17 February 2013
- For the brachiopod genus, see Bifolium (brachiopod).
The bifolium is a quartic plane curve of the equation:
In polar coordinates, its equation is