Tetrachloroethylene (data page): Difference between revisions

Latest revision as of 00:33, 18 February 2013

For the brachiopod genus, see Bifolium (brachiopod).

The bifolium is a quartic plane curve of the equation:

(x^{2}+y^{2})^{2}=ax^{2}y.\,

In polar coordinates, its equation is

\rho =a\sin \theta \,\cos ^{2}\theta .

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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]]