【题文】已知集合,,则下图中阴影表示的集合为( )A.B.C.D.
【题文】已知集合,,则下图中阴影表示的集合为( )A.B.C.D.
题型:难度:来源:
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045327-61300.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045327-24092.png)
,则下图中阴影表示的集合为( )
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045327-55455.jpg)
答案
【答案】A
解析
【解析】
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045329-26556.png)
举一反三
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045317-39783.png)
,记和
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045318-43681.png)
中所有不同值的个数为
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045318-58137.png)
.如当
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045318-42635.png)
时,由
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045318-86127.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-57313.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-34542.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-89659.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-14011.png)
,得
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-10508.png)
.对于集合
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-80374.png)
,若实数
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045319-59478.png)
成等差数列,则
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045320-89085.png)
=
【题文】设全集
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045248-37418.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045249-58677.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045249-65229.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045249-95301.png)
是( )
A.(0,1] | B.(0,1) | C.![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045249-71694.png) | D.![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045249-54043.png) |
【题文】已知集合
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045239-15946.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200314/20200314045239-20051.png)
,则 ( )
最新试题
热门考点