函数的极值、最值问题是以各种各具特色的函数为载体、以导数应用知识为工具、融函数图象性质及分类讨论思想于一体、具有一定的规律性的一类题目.虽然都知道极值和最值是不同的,可不少同学对二者的了解仅仅停留在表面上,解题往往似是而非,尤其是求解含有参数的极值、最值问题 The extremum and value problems of a function are based on a variety of functions with various characteristics, a derivative application knowledge as a tool, a fusion function image property, and a classification and discussion idea, which have a certain degree of regularity. We all know that the extreme value and the most value are different, but many students can only understand the two on the surface, and the problem is often plausible, especially in solving the problem of the extreme value and the maximum value with parameters.