函数是高中数学的重点内容,而函数的性质又是历年高考命题的热点,用导数研究函数的性质比用初等方法研究要方便得多,因此必然是高考命题的重点,可能出现在小题中也可能出现在大题上,也可以单独命题,亦可能作解题工具或试题的一部分出现在综合题中.本文将对用导数的解题作一些探究. Functions are the focus of high school mathematics, and the nature of functions is a hot topic in the college entrance examination propositions over the years. Using derivatives to study functions is much more convenient than using elementary methods. Therefore, it must be the focus of the college entrance examination proposition, and may appear in small topics. It may also appear on a large topic, or it may be a stand-alone proposition, or it may be part of a problem-solving tool or question that appears in a comprehensive question. This article will explore some of the problems with derivatives.