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在历年高考中,不等式是热点问题之一,活用数形结合可以巧解一些不等式问题.一、利用实数与数轴上的点一一对应
In the college entrance examination over the years, the inequality is one of the hot issues. Using the combination of numbers and shapes can solve some inequality problems. First, use the real numbers to correspond to the points on the axis.