摘要
对一个求曲面方程的例题加以推广,得到球面的一种定义方式,即到两个任意定点的距离之比为常数(≠1)的点的轨迹构成球面,从而使得所有常见二次曲面的定义在形式上趋于一致.
Through a further study of an example about of surface, the author summarizes the finitions of eonicoid. If the ration of distance between two specific point is a constant （≠1）, e trajectory of the point forms a spherical surface. Thus the concordance of conicid is obtained rough a series of analysis.
出处
《高等数学研究》
2012年第1期45-46,共2页
Studies in College Mathematics
