解题方法
1 . 已知集合M=
则
等于
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167421952/STEM/f35c0e7a9f5942718d9cca867f6ed12e.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167421952/STEM/c44601ec3b95431b9ccc16214e3dce44.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10-11高一上·吉林长春·阶段练习
解题方法
2 . 已知函数
的定义域为集合A,![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/3808ed6eb1e3418994c64a0298eafed5.png)
(1)求集合
;
(2)若
,求
的取值范围;
(3)若全集
,
,求
及
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/53ea76f5df4046379643b9f07dfc662e.png)
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/3808ed6eb1e3418994c64a0298eafed5.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/44bff77034524a21b8e24e011bf26ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若全集
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/f0aecaad6f064f25bcb7b578afe46294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7892193e97bf330eec0782dfb18fc5.png)
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/e9dd3e48774a458fb53f6daed9cf65e1.png)
![](https://img.xkw.com/dksih/QBM/2011/11/14/1570350469455872/1570350474649600/STEM/f6702e1fa5914082ad32c083e6c283bd.png)
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