名校
1 . 若集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5018c166f8035128447d4b764815c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865084e4010ea2cb5583d73c401ed2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 已知函数
的定义域为集合A,集合
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf64c68a647631e03fab80e05be5d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ea1be9aa0cc83a4b3344c516b2b4d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc881d5a6f5c8fad4acccc60e89ff445.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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