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1 . 设关于
的不等式
的解集为A,不等式
的解集为B.
(1)求集合A,B;
(2)若
是
的必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efee2a63641d00a36ed01442b834ff34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e9bfc9964315c002b4a3ff3ce8ba4f.png)
(1)求集合A,B;
(2)若
![](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)
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2021-01-30更新
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4卷引用:四川省绵阳市江油中学2020-2021学年高二下学期4月月考数学(文)试题