最值问题涉及的知识面较广,解法灵活多变,蘊含着丰富的数学思想方法,对发展学生的思维,提升学生解题能力起着十分重要的作用.本文举例介绍这类问题的常见思路和方法.一、利用非负数的性质在实数范围内,显然有m~2+n~2+p≥p,当 The most valuable questions involve a wide range of knowledge, a flexible solution, contains a wealth of mathematical thinking and methods, which plays an important role in developing students’ thinking and enhancing their ability to solve problems.This article gives examples of common ideas on such issues First, using the property of non-negative numbers in the real number range, it is clear that there are m ~ 2 + n ~ 2 + p≥p when