【题文】已知集合,则等于( )A.{-1,0,1}B.{1}C.{-1,1}D.{0,1}
【题文】已知集合,则等于( )A.{-1,0,1}B.{1}C.{-1,1}D.{0,1}
题型:难度:来源:
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155420-10619.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155420-72198.png)
等于( )
A.{-1,0,1} | B.{1} | C.{-1,1} | D.{0,1} |
答案
【答案】B.
解析
【解析】
试题分析:解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155420-79219.png)
,得
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155420-37163.png)
,∴
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155420-54553.png)
.
考点:1.指数不等式;2.集合的交集.
举一反三
【题文】函数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155407-84705.png)
的定义域为集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155407-81781.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155407-27805.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155408-93219.png)
.
(1)求集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155407-81781.png)
及
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155408-42716.png)
.
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155408-75989.png)
,求
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155408-71409.png)
的取值范围.
【题文】已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155353-52178.png)
,集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155353-99221.png)
,集合
![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155353-13588.png)
,则集合M ∩ N的面积是( )
A.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155354-96396.png) | B.![](http://img.shitiku.com.cn/uploads/allimg/20200322/20200322155354-48403.png) | C.π | D.2π |
【题文】设集合M={x|x
2-x-12=0},N={x|x
2+3x=0},则M∪N等于
A.{-3} | B.{0,-3, 4} | C.{-3,4} | D.{0,4} |
最新试题
热门考点