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1.读文[1]所想文[1]提出了根据圆锥曲线焦点探究圆锥曲线的两种方法,经过笔者探究,实际上方法二只是方法一的一个特例!为方便说明,我们先来回顾支撑文[1]中方法一的定理!定理1以圆锥曲线的焦点弦(斜率不为零)的两个端点作圆锥曲线的两条切线,过这两条切线的交点作长轴(椭圆),实轴(双曲线),轴(抛物线)的垂线,那么这条直线就是这个焦点对应的准线.
1. Read the text [1] The idea [1] proposed two methods to explore the conic according to the focus of the conic curve, after I explore, in fact, the method two is a special case of a method! For convenience, let’s review Theorem 1 of Theorem 1 supports the theorem 1 of Theorem 1 Theorem 1. Two tangent lines of a conic curve are formed by using two end points of a conic curve focus chord (with a slope not zero), and the intersection point of the two tangent lines is taken as the long axis (ellipse) , Real axis (hyperbola), axis (parabola) vertical line, then this line is the focus of the corresponding line.