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求圆锥曲线离心离的取值范围,是常见的一类问题.解题的关键是如何构造出关于离心率e的不等式.本文通过一例,给出求解这类问题的几种思维策略.
Finding the range of centrifugal concentric separation is a common problem. The key to solving the problem is how to construct an inequality about the eccentricity e. This paper gives an example of several thinking strategies for solving this type of problem.