最值是数学的常见问题之一,在高中数学中占有重要地位,由于最值问题涉及的知识面广、综合性强,因而解答时感到比较困难.究其原因,就是对最值问题分类不清、方法不当.常见最值问题的解答过程可分为两类:一、先确定(取得最值时的)位置,后求最值;二、先求最值,同时(或后)确定(取得最值时的)位置的 The value of mathematics is one of the most common problems in high school mathematics occupies an important position, as the value of the most widely involved issues, comprehensive, and therefore feel more difficult to answer.The reason is that the classification of the most value problem Qing, improper method. The most common problem solving process can be divided into two categories: First, determine the location (to obtain the most value), and then seek the most value; Second, first seek the most value, at the same time (or after) to determine When the most valuable) location