不知道這個曲線和那個運動品牌背靠背有什么關系.阿迪原先的商標是個三葉草,難道背靠背也是由數學圖形來的?

以下是維基上的解釋.

In geometry, the kappa curve or Gutschoven's curve is a two-dimensional algebraic curve resembling the Greek letter ? (kappa). The kappa curve was first studied by Gérard van Gutschoven around 1662. In the history of mathematics, it is remembered as one of the first examples of Isaac Barrow's application of rudimentary calculus methods to determine the tangent of a curve. Isaac Newton and Johann Bernoulli continued the studies of this curve subsequently.

Using the Cartesian coordinate system it can be expressed as:

x^2(x^2 + y^2)=a^2y^2

#http://www.mathcurve.com/courbes2d/kappa/kappa.shtml vertices = 1000t = from 0 to (2*PI)r = 10 a = r*tan(t)x = a*cos(t) y = a*sin(t)

#http://www.mathcurve.com/courbes2d/kappa/kappa.shtml vertices = 1000t = from 0 to (2*PI)r = 10 a = r*tan(t)x = a*sin(t) y = a*cos(t)

轉載于:https://www.cnblogs.com/WhyEngine/p/3839870.html

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