导数是研究函数的重要工具,是讨论函数性质的基本方法.而导数与单调性、不等式的交汇,作为导数的应用是近年来的高考热点.本文将分类聚焦如下. Derivatives are important tools for the study of functions, and they are the basic methods for discussing the nature of functions. The convergence of derivatives with monotonicity and inequality, and their application as derivatives are hot topics of college entrance examination in recent years. This article focuses on classification as follows.