所谓导数的方法,是指将相关的问题转换成函数形式,利用导数研究函数的性质,得出相关的结论,然后再还原到原问题中的一种解题的方法.利用导数法解题,实质是建立数学模型解决问题.教材中着重介绍了用导数研究函数的单调性与极值,这是导数最基本的应用,同学们一定要认真掌握,才能融会贯通,并将其应用到其他的一些地方.本文通过具体例子,介绍导数法在解题中的一些应用,供同学们参考. The so-called derivative method refers to the conversion of related problems into a functional form, the use of derivatives to study the nature of functions, to draw relevant conclusions, and then revert to a problem solving method in the original problem. Using derivative methods to solve problems, The essence is to establish a mathematical model to solve the problem. The textbook focuses on the use of derivatives to study the monotonicity and extremum of the function. This is the most basic application of the derivative. Students must carefully grasp it in order to apply it to other applications. Local. This article uses specific examples to introduce some applications of derivative methods in problem solving for students’ reference.