【题文】设集合,,则( )A.B. C. D.
【题文】设集合,,则( )A.B. C. D.
题型:难度:来源:
答案
【答案】A.
解析
【解析】
试题分析:集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203539-92425.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203539-88574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203539-13159.png)
,所以
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203539-39834.png)
.
考点:集合的运算.
举一反三
【题文】设集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203529-84408.png)
,则满足条件
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203530-28375.png)
的集合P的个数是( )
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203428-77832.png)
,集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203428-57982.png)
.
(1)求集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203429-19257.png)
;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203429-25839.png)
,求实数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203429-62802.png)
的取值范围.
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203413-69299.png)
,集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203414-38091.png)
.
(1)求集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203414-33868.png)
;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203415-39230.png)
,求实数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203415-21419.png)
的取值范围.
【题文】不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203401-51815.png)
解集为Q,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203401-98551.png)
,若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203401-66371.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203401-13383.png)
等于( )
A.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203402-51684.png) | B.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203402-19413.png) | C.4 | D.2 |
【题文】不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203353-43900.png)
解集为Q,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203354-99829.png)
,若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203354-28652.png)
,则实数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203354-20257.png)
等于( )
A.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203354-90675.png) | B.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322203355-50119.png) | C.4 | D.2 |
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