论文部分内容阅读
求抛物线的焦点,是从平面解析几何到高等几何的一个基本课题,各类课本的方法都是先化抛物线的一般方程为标准方程,再在主轴上求到顶点距离为p╱2的点。
The focus of the parabola is a basic problem from plane analysis geometry to higher geometry. The method of all kinds of textbooks is to first paraphrase the general equation of the parabola as the standard equation, and then find the point on the principal axis with the distance p顶点2.