在数轴上画出下列各式中X的范围

显示全部楼层 · 2007-9-9 10:16:14

__
___1_____|___|___|___|___|___|___|___|___|___|___|___>
-4-3-2-10 1 2 3 4 2
____________________________|___|___|___|___|___|___|___|___|___|___|___>
-5-4-3-2-1 0 1 2 3 4 5 3
___________
_______________ _____|___|___|___|___|___|___|___|___|___|___|___>
-5-4-3-2-10 1 2 3 4 5 在数轴1的-4和4上 2的-3和3上3的-5 -2和52上都画上空心圆因为取不到