【题文】设全集,,,求,,,
题型:难度:来源:
答案
【答案】(-2,3),
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232637-66231.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232638-10625.png)
解析
【解析】
试题分析:、解:
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232638-67378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232638-84200.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232637-96542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232639-46771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232639-35168.png)
考点:集合的基本运算
点评:主要是考查了集合的交集并集和补集的运用,属于基础题。
举一反三
【题文】集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232540-85486.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232540-23002.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232540-18081.png)
A.{2,3,4} | B.{2 ,4} | C.{2,3} | D.{1,2,3,4} |
【题文】设集合是A={
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232520-67286.png)
是(0,+∞)上的增函数},
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322232520-26010.png)
,则
;
【题文】已知集合A={x|a-1<x<2a+1},B={x|0<x<1},若A∩B=φ,求实数a的取值范围.
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