不等式(组)中蕴含着丰富的数学思想,本文列举几种主要的数学思想,供同学们品鉴.一、数形结合思想在解决与不等式(组)有关的问题时,有时需要结合数轴来分析,如在数轴上表示不等式(组)的解集或根据数轴上表示的不等式(组)的解集选择合适的不等式(组)等.例1(2013年铜仁模拟题)将一个不等式组的解集表示在数轴上如图1所示,则这 Inequality (group) contains a wealth of mathematical ideas, this article lists several major mathematical ideas for students to taste.First, the number of combination of ideological in solving inequality (group) -related problems, sometimes need to combine the number of axes Analysis, such as the number of axes on behalf of the inequality (group) solution set or based on the axis of inequality (group) solution set select the appropriate inequality (group), etc. Example 1 (2013 Renren model) will be an inequality group Solution set said in the number of axes shown in Figure 1, then this