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怎样在数轴上画解集

更新时间: 2020-10-05 00:00:00     

方法如下:

1、找到2个端点,即解集的起点和终点,开区间端点用空心点表示,闭区间用实心点表示;

2、确定解集的方向,若是“大于”或“大于等于”向右画,“小于”或“小于等于”向左画;

3、若是"大于“或”小于“两条线相向时应连成闭合范围,否则是开放范围。

关键词: 怎样 数轴

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