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求圆锥曲线离心率的值或范围是一种常见的题型,为同学们能切实把握此类问题的求解,下面例谈其常用的求解策略。
Finding the value or range of the eccentricity of the conic section is a common question type. It is for the students to really grasp the solution of such problems. The following examples are used to discuss the common solution strategies.