函数历来是高中数学的主干知识,但随着高中课程的改革,尤其是导数与向量进入高中教材之后,高考函数题型发生了明显的变化,多为可利用导数等知识求解的问题.为适应新高考需要,解函数题也必须与时俱进,尽可能利用导数等知识研究函数的性质及图形变化特征,发挥导数在解题中的应用 The function has always been the main knowledge of high school mathematics, but with the reform of the high school curriculum, especially after the derivatives and vectors have entered the high school textbooks, the college entrance examination function types have undergone significant changes, most of them can be used to solve problems such as derivative and other knowledge. The new college entrance examination needs, the solution function must also be advancing with the times, the use of derivatives and other knowledge as much as possible to study the nature of the function and the characteristics of graphical changes, to play the role of derivative in solving problems