新的数学课程标准倡导学生用所学知识解决简单的实际问题,增强学生应用数学意识.初中范围内“求最值”问题在中考试题中经常出现,解决好这一问题,可以提高学生的思维水平、探究能力和学习数学的兴趣.现将解决这一类问题的基本方法介绍如下:一、利用函数的性质函数的自变量范围决定了函数值的范围,因此,我们建立函数关系式,确定自变量范围,就可以得到需要 The new mathematics curriculum standard advocates students to solve simple practical problems with the knowledge they have learned and enhance students ’awareness of applied mathematics. The problem of “seeking the most value” in junior high school often appears in the middle school exam questions. Solving this problem can improve students’ Of the level of thinking, ability to explore and interest in learning math.Now the basic methods to solve this type of problem are described below: First, the nature of the use of the function The argument range of the function determines the scope of the function value, therefore, we establish the functional relationship , Determine the range of independent variables, you can get the need