【题文】集合U,M,N,P如图所示,则图中阴影部分所表示的集合是( )A. B.C.D.
题型:难度:来源:
【题文】集合U,M,N,P如图所示,则图中阴影部分所表示的集合是( )
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154836-40049.png)
答案
【答案】B.
解析
【解析】
试题分析:由Venn图知,图中阴影部分所表示的区域在集合M和全集U中,但不在集合P,N中,所以图中阴影部分所表示的集合可表示为
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154837-66922.png)
.故应选B.
考点:Venn图表达集合的关系及运算.
举一反三
【题文】集合A={x∈N|
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154826-61069.png)
∈N}用列举法表示为
.
【题文】(本小题12分)
设集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154759-70054.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154759-84294.png)
.若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154759-20845.png)
,求实数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154759-26541.png)
的值组成的集合.
【题文】(本小题12分)
设
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154706-56142.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154706-90746.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154706-88654.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154706-13428.png)
,求
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154707-68857.png)
的值;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154707-60338.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154707-74923.png)
,求
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154707-68857.png)
的值;
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154708-75306.png)
,求
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154707-68857.png)
的值.
【题文】集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154700-52962.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154700-47338.png)
,已知
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154701-36118.png)
只有一个子集,那么实数k的取值范围是( )
A.(-¥,1) | B.(-¥,1] | C.(1,+¥) | D.(-¥,+¥) |
【题文】关于x的不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154633-71598.png)
的解集为
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154633-89630.png)
,若集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154633-63176.png)
同时满足:
①
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154634-21726.png)
(其中
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154634-38559.png)
为整数集)
②B中的元素个数有限且为最少.
则实数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322154634-53770.png)
=______
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