我们知道,曲线可以看作适合于某种条件的点的轨迹。如果我们能根据已知条件恰当地将动点坐标和各已知量间的关系用一个等式表示出来。化简后,就可以得到所求曲线的方程。但是,求曲线的方程要涉及到较多的基础知识,难度较大,所以在高二总复习时,和学生一道探索一些基本规律,研究一些分析方法,这对于提高学生分析问题和解决问题的能力,将会起到一定的作用。 We know that a curve can be thought of as a trajectory of a point suitable for a certain condition. If we can properly according to the known conditions will be moving point coordinates and the relationship between the known amount by an equation that. Simplify, you can get the curve of the equation. However, the equation of the curve involves more basic knowledge, more difficult, so in the senior high school general review, and students to explore some of the basic laws, to study some analytical methods, which is to improve students ability to analyze and solve problems , Will play a role.