1 . 非空集合
具有如下性质:①若
,则
;②若
,则
.下列判断中,正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4970b63e04ae03e833bdb95bd52e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e13a814f8e081078dcf3788177affcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
A.![]() | B.![]() |
C.若![]() ![]() | D.若![]() ![]() |
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2 . 已知集合
.
(1)判断(1,2)和(2,1)是否是
中的元素;
(2)若集合
, 求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07cb10a71010a65eb6e092f0c76c5e2.png)
(1)判断(1,2)和(2,1)是否是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13990081570f23cd6b39a281f4d8fa63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
您最近一年使用:0次
2022-10-11更新
|
131次组卷
|
2卷引用:广西贵港市2022-2023学年高一上学期期中教学质量检测数学试题