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已知函数在某区间上递增(递减),求参数的取值范围是近年高考中出现频率较高的一类问题,也是同学们感到比较棘手的一类问题.本文结合2008年高考题介绍处理这类问题的两种常用方法.
It is known that the function increases (decreases) in a certain interval, and the range of the parameter is a kind of question that appears frequently in college entrance examination in recent years, which is also a kind of difficult problem that students feel more difficult. Two common methods for this type of problem.