已知集合
,
,
.
(1)求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c60ee1eb10343e26071284415000f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100f200072ccccdb06512885ef1c855a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e0ce1785f78682fa5caba532f9502f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22882310035db6d3d953e060b0c91733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-03-01 23:25:03
|
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解答题-问答题
|
容易
(0.94)
解题方法
【推荐2】设全集为
,集合
或
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30df4aa13ed9e341b4470b1a83091cc.png)
(1)求
;
(2)已知
,若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74c774c2562ff6cfc6bd256bf39870b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92741e38f38a9f2cbdd2db85b249581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30df4aa13ed9e341b4470b1a83091cc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187831ac05fe81eee985671e173a732a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1dd6b0b695276e85d5db8ea4d8274c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e968937d457d9e2237b401077ff224a.png)
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