设集合
,
.
(1)当
时,求集合
;
(2)当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e9b907d4f6a1bbced682bf8e696ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d070b4b0ee633e161326629202a128.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2022-10-06 17:35:53
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解题方法
【推荐1】已知集合
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【推荐2】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d49fe48dce27eef37ce851f6b05ece0.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fb27a3ddec0d46ba6ca4f29a26c745.png)
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(Ⅱ)若
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