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高中数学教材中给出了圆锥曲线的两种定义:第一定义和统一定义(第二定义).灵活运用这两种定义解决有关圆锥曲线的问题,往往能收到避繁就简、事半功倍的效果. 一、求离心率
Two definitions of conic curves are given in the high school mathematics textbooks: the first definition and the unified definition (second definition). Flexible use of these two definitions to solve problems related to conic curves can often result in evasive conciseness and complications. Effect. I. Eccentricity