【题文】已知集合,,则( )A.{x|10<x<1}B.{x|x>1}C.{x|x≥2}D.{x|1<x<2}
【题文】已知集合,,则( )A.{x|10<x<1}B.{x|x>1}C.{x|x≥2}D.{x|1<x<2}
题型:难度:来源:
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144322-98210.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144323-89136.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144323-93064.png)
( )
A.{x|10<x<1} | B.{x|x>1} | C.{x|x≥2} | D.{x|1<x<2} |
答案
【答案】C
解析
【解析】
试题分析:由
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144323-66498.png)
得
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144324-66563.png)
,故
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144324-19488.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144324-79317.png)
或
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144325-94287.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144325-94115.png)
,故
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144325-27064.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144323-93064.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144325-68657.png)
.
考点:1、集合的运算;2、函数的定义域与值域.
举一反三
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144206-51841.png)
={0,1,2},则集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144207-92096.png)
中元素的个数是( )
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144132-40907.png)
={0,1,2},则集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144132-54738.png)
中元素的个数是( )
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144111-99941.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322144111-92005.png)
=( )
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