均值不等式是不等式中的重要内容 ,也是每年高考重点考查的知识点之一 .它的应用范围几乎涉及高中数学的所有章节 ,且常考常新 .尤其是用它作为一种重要手段来求函数最值时 ,越来越受到广大中学师生的重视 ,但要真正熟练掌握这种方法和技巧 ,决不是一朝一夕所能解决的 .事实上 The mean inequality is an important part of inequality, and it is also one of the important points of the annual college entrance examination. The scope of its application is almost all chapters of high school mathematics, and often used often new. In particular, it is used as an important means to find the function At the highest level, more and more teachers and students in the middle schools are paying more attention to it, but it is by no means easy to master this method and skill.