函数是中学数学的一个重点,特别是到了高中,函数的类型多了,如何求函数的值域是一个重点也是一个难点,而函数值域(最值)的求解方法在高考中更是一个常考点。因此,能熟练掌握其值域(最值)求法就显得十分重要,本文旨在通过对典型例题的分析求解来归纳函数值域(最值)的求法。 Function is a high school mathematics, especially in high school, the type of function and more, how to find the value of the function of the area is a key and difficult, and the function of the domain (most value) in the college entrance examination is a more often Test sites. Therefore, it is very important to be able to master the method of value range (the most value) effectively. The purpose of this paper is to summarize the solution of the range of the function (the most value) by analyzing and solving the typical examples.