已知集合
,
,若
,则
的一个值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44de762a14a1c3d20f171a4578e705eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aaee38c47c71e60c37bd3f563c46a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e0fa329090a3042ce06fcf6d8e17a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.0 | B.1 | C.2 | D.3 |
更新时间:2023-11-26 12:42:34
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【推荐1】已知集合
,
,且
,则实数
的所有取值集合是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47274a9c37d1ead311b0f37c08a5fde7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2fd97fe26a169658227117349ea013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
【推荐1】已知使不等式
成立的任意一个
,都满足不等式
,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bedecbf5a8478535c91a86d5b876d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0c6811b61f6b14e6bed3589c7ee826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】若
,则关于
的不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1dcaaa41c53d6a65e560378a2e878d.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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