解题方法
1 . 已知全集R,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279fba9ba2f325d2d3c95f8caede1cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc59d18cdfd8812adcd3d8eb8b2b22c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 设集合
,
.
(1)若
,求
;
(2)当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a0a502362cd14fedc6fe648dd1751e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf0201291b6b3f67e43ec9684266ef3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b569bd1df594e70666e9f6ea3d851a4.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8fddb00c7b2782f595bb9623945edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2019-11-15更新
|
815次组卷
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5卷引用:内蒙古赤峰市宁城县2019-2020学年高一上学期期末数学试题
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3 . 若集合
,则
的真子集的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540f63df1904d8c7a7f9b489b2be079c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.3 | B.4 | C.7 | D.8 |
您最近一年使用:0次
2019-08-02更新
|
2154次组卷
|
6卷引用:内蒙古赤峰市2018-2019学年高一下学期期末数学(理)试题