圆锥曲线有两种定义,第一种定义展示了三种圆锥曲线各自的几何特征,第二种定义则用统一的形式揭示了圆锥曲线的内在联系,使焦点、离心率、准线构成了一个和谐的整体,在解决涉及焦半径、焦准距等有关问题时,灵活运用圆锥曲线的两种定义,往往能使解题过程简洁明快,收到事半功倍的 There are two kinds of conic curves. The first one shows the geometric characteristics of the three conic curves. The second one shows the internal relations of the conic curves in a unified way, making the focal point, eccentricity, and quasi- Harmonious overall, in the resolution of coke radius, focus distance and other related issues, the flexibility to use the two definitions of the conic tend to make the problem-solving process simple and neat, receive more with less effort