(1)A∪A=A (2)A∪∅=A (3(1)A∪A=A (2)A∪∅=A (3)A∩A=A (4)A∩∅=∅
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 15:58:10
![(1)A∪A=A (2)A∪∅=A (3(1)A∪A=A (2)A∪∅=A (3)A∩A=A (4)A∩∅=∅](/uploads/image/z/7257835-19-5.jpg?t=%281%29A%E2%88%AAA%3DA+%282%29A%E2%88%AA%26%238709%3B%3DA+%283%281%29A%E2%88%AAA%3DA+%282%29A%E2%88%AA%26%238709%3B%3DA+%283%29A%E2%88%A9A%3DA+%284%29A%E2%88%A9%26%238709%3B%3D%26%238709%3B)
x)0t|ԱQATS07 ˙09(mTO|"DΆxٳXy럮|VΓ5o~9}ݓ
Ovv$Adt;VW?\R~ZH;,l~`"L|:45F6~1jF_t/{zv&UCņE@f:aOv/}|ӶϚV }E3e !Ga
(1)A∪A=A (2)A∪∅=A (3(1)A∪A=A (2)A∪∅=A (3)A∩A=A (4)A∩∅=∅
(1)A∪A=A (2)A∪∅=A (3
(1)A∪A=A (2)A∪∅=A (3)A∩A=A (4)A∩∅=∅
(1)A∪A=A (2)A∪∅=A (3(1)A∪A=A (2)A∪∅=A (3)A∩A=A (4)A∩∅=∅
这四个都是对的,你想问什么
A={x|3≤x<7}
B={x|2<x<10}
C={x|x<a}
(1)A∪B={x|2<x<10}
(CRA)∩B={x|2<x<3或7≤x<10}
(2)若A∩C=∅,则
a≤3
谢谢
是否可以解决您的问题?