用仿射对应求4点椭圆的方法及应用

Determination of an Ellipse Through 4 Points With Affine-Correspondence Principle and Its Application

本文是应用仿射对应原理,以椭圆曲线上4个点及其中心,求作椭圆的方法。以及用此方法解决某些一般形式的二次曲面中的一些几何作图问题。

Applying affinc-correspondence principle, an cllipse can be constructed when 4 arbi-trary points on which and the center of which are given. This method can be used to solvesome graphical problems of ordinary quadrics.