我们知道,如果集合
,那么S的子集A的补集为
.类似地,对于集合A,B,我们把集合
叫做集合A的B的差集,记作
.例如.
,则有
,据此,试回答下列问题:
已知集合
,集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8329b3a2417ebb0cf1a0455a4e8c06c.png)
(1)当
时,求A—B;
(2)若
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952f1e0ce5bd53a6d5e8bb07ea2da5f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773d695a7f060f90f75deb7f8f9c4189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22336bfc96638c2957c83c02874a83cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b39d3507e40a81bdf01f677173ed337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a349b3ffbca7663e1099e17607de136a.png)
已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa8eb73e843f93dcbea94a3926cf2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8329b3a2417ebb0cf1a0455a4e8c06c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0d0ad0d33fd9a152a0e407e2afdb84.png)
更新时间:2022-11-24 18:27:19
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知集合A={x|-2≤x≤5},B={x|2m-1≤x≤2m+1},若A∪B=A,求实数m取值范围.
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知集合
,
.
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641a468119b913c75b9813c747bb2235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa478f5f6ccff7f8d550ebf6a1488258.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】我们知道,如果集合A⊆U,那么U的子集A的补集为∁UA={x|x∈U,且x∉A}.类似地,对于集合A,B,我们把集合{x|x∈A,且x∉B}叫做A与B的差集,记作A-B.例如,A={1,2,3,5,8},B={4,5,6,7,8},则A-B={1,2,3},B-A={4,6,7}.
据此,回答以下问题:
(1)若U是高一(1)班全体同学的集合,A是高一(1)班女同学组成的集合,求U-A及∁UA;
(2)在图中,分别用阴影表示集合A-B;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/9e9b41eb-d4d0-4aee-85d3-01425e70ce3f.png?resizew=367)
(3)如果A-B=⌀,那么A与B之间具有怎样的关系?
据此,回答以下问题:
(1)若U是高一(1)班全体同学的集合,A是高一(1)班女同学组成的集合,求U-A及∁UA;
(2)在图中,分别用阴影表示集合A-B;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/9e9b41eb-d4d0-4aee-85d3-01425e70ce3f.png?resizew=367)
(3)如果A-B=⌀,那么A与B之间具有怎样的关系?
您最近一年使用:0次