论文部分内容阅读
文[1]、文[2]给出了圆锥曲线与顶点有关的一组对偶元素的性质,文[3]给出过焦点的直线与准线的性质,笔者通过合情猜想类比探究,发现圆锥曲线有一个与焦点有关的性质,结论如下:定理1已知椭圆
In [1] and [2], the properties of a pair of dual elements related to vertices are given in [1] and [2]. In [3], the properties of straight line and quasi-line of focal point are given. The conic has a focus-related property with the following conclusion: Theorem 1 Known ellipses