【题文】已知全集U = R,不等式的解集A,则 .
【题文】已知全集U = R,不等式的解集A,则 .
题型:难度:来源:
【题文】已知全集U = R,不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120942-99739.gif)
的解集A,则
.
答案
【答案】
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120943-37413.gif)
或
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120943-41270.gif)
解析
【解析】略
举一反三
【题文】设集合
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120936-83409.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120936-83963.png)
( )
A.{1,2} | B.{3,4} | C.{1} | D.{-2,-1,0,1,2} |
【题文】设集合
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120931-41476.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120932-31796.png)
( )
A.{1,2} | B.{3,4} | C.{1} | D.{-2,-1,0,1,2} |
【题文】集合M={x|
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120846-42205.png)
}, N={
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120847-13629.png)
}, 则 M
![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120847-91976.png)
N = ( )
A.{0} | B.{2} | C.![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120847-96799.png) | D. {![](http://img.shitiku.com.cn/uploads/allimg/20200323/20200323120847-39322.png) |
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