导数作为对高中数学函数模块的补充和延伸,不仅解决了很多初等函数的方法不能解决的问题,更大程度上加深了学生对函数知识的认识.利用导数去处理的函数类问题经常出现模拟或高考试题当中,与平面图形的结合就是其中典型的一类.下面通过举例说明其在江苏的高考调研试题中的应用. Derivatives as a complement and extension of high school mathematics function module, not only solve many problems can not be solved by the elementary function method, to a greater extent, deepen the student’s understanding of the function of the knowledge.Functional class problems using derivatives to deal with often simulation or Among the college entrance examination examinations, the combination with the graphic is one of the typical categories. The following is an example to illustrate the application of the college entrance examination research questions in Jiangsu.