名校
解题方法
1 . 集合
.
(1)设
,若
是
的充分条件,求
的取值范围.
(2)设
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbb3f0efb473d79f7d84bbc02c70920.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed2f5e11cef1a7062aac81b72d70b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42b90458fc2782a36a4186ef0852c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
2 . 已知集合
,
,若
,则实数
的取值构成的集合是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc3194c9f3c2435cff5e10c06c4b3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d793216777a5e22c5148bfe78bfdee3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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