名校
1 . 求下列关于
的不等式的解集:
(1)
;
(2)
(其中
常数,
);
(3)
(其中
常数,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0432f4e2161f2d82b8afbcccb799f8db.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ace91dbe03f5345e737b36ec262d344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085f0aa35d8f86b5e4fd152bc6b123e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
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名校
解题方法
2 . 设集合
,
,则能使
成立的
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91055201d49871950a1d3a9d4288907b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10192b4f76e6f5b54bbf4ae393a53c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86c460b7c5ed5e1e203635db58e65c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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