利用函数单调性解题 ,包括解不等式、求最值、比较大小乃至于解方程是时下比较热门的话题 .然而 ,一个不可忽视的一个现象是 ,自 2 0 0 0年全国高考试题中出现由单调性求参数的取值范围后 ,各地模拟试题中对单调性已经不仅仅局限在后面———即应用单调性解题 ,有相当一部分试 The use of monotonic functions to solve problems, including solving inequalities, finding the most value, comparing sizes, and even solving equations is a hot topic nowadays. However, one phenomenon that cannot be overlooked is that there have been problems in the National High School Exams since 2000. Monotonicity After finding the range of parameters, the monotonicity in the local simulation test questions is not only limited to the latter—that is, the application of monotonic solutions, there is a considerable part of the test.