1 . 设集合
,则集合
中元素的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9371db176273e05c2ca573ee7ea47fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21fdf5a60985cfe7524e92674d0181a.png)
A.0 | B.1 | C.2 | D.3 |
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2 . 已知x、
,集合
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4f410b8984e7e7aa49168535396928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03783390791e09eb64ac605c915c2710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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3 . 若关于x的方程
的实数解集为M,则
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c4a0bfdf2bc4b3c9654db427fb5653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957abf2b0aba3cdbb34e00da2b098d3e.png)
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4 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8785e4a04523dd57526e5d0d29a8de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6522c73f9c3e7ecfd499758d36bb80c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知集合
,集合
.
(1)当
时,求
,
;
(2)写出一个
值,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255d8583fc7ebf0d40c29bbfaa6fa2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9a11cedd95b1d11a2ad48b1d2b8b8f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8250496dff397b3e8778755a8fe5d31e.png)
(2)写出一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
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6 . 设
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515d2820ddce09e21a6e12c4e1e592e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d429f280963b1b39959b3175a371fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b78575380cb477ac620a86a51a496ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48df90426995ac031c27bf8b9199e3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知集合
,
,
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9e6ad1166c7625e63b80e75b2fb1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5f10b560a5d5d117c3069cb1715b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077ecdcf63409610000ba7b790f81828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bd6ff42015f5a2badc24782d6ccdf0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知集合M = {x| - 4 <
< 2},N = {x|x2 - 9 < 0},则M∩N = ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.{x| - 4 < x < 3} | B.{x| - 4 < x <- 3} | C.{x| - 3 < x < 2) | D.{x| - 3 < x < 3} |
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10 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7515aecabc49f497ce9e6aeec4c972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8817b9550ea4ceeb77f2fa1a29b40346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
您最近一年使用:0次