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圆锥曲线中的参数范围问题是高考以及各类考试的重点考察问题,题目比较灵活、技巧性也强,对知识的综合运用能力要求较高,求范围问题关键是建立合理的不等关系,而建立不等关系是学习的难点,同学们常感到无从下手,现将此类问题的解题方法总结如下。
The parameter range problem in the conical curve is the key examination problem in the college entrance examination and all kinds of examinations. The topics are more flexible and skillful. They have higher requirements for the comprehensive utilization of knowledge. The key to the scope problem is to establish a reasonable inequality. The establishment of unequal relationships is a difficult task for learning. Students often feel that they cannot start. The methods for solving such problems are summarized below.