1 . 判断正误(正确的写正确,错误的写错误)
(1)任何集合至少有两个子集.( )
(2)
.( )
(3)若
,且
,则
.( )
(4)集合
的子集是
,
,
.( )
(1)任何集合至少有两个子集.
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91b4a4530b820b6728f37e497847faf.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb584b83ae783a0ec8a9b4628b7fca3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(4)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dcd9264c20f3413a875633884622db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f5e5688b5c7e514ee72597690a7676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6170ed4a10e57487d525e71610dff82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dcd9264c20f3413a875633884622db.png)
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2 . 判断正误(正确的填“正确”,错误的填“错误”)
(1)集合A和集合B的公共元素组成的集合就是集合A与B的交集.( )
(2)若
,则A,B均为空集.( )
(3)A,B中分别有3个元素,则
中必有6个元素.( )
(4)若
,则
.( )
(1)集合A和集合B的公共元素组成的集合就是集合A与B的交集.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
(3)A,B中分别有3个元素,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a479511a50da604b2fc7398617db8387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6204ebd38f7dcba36e4086998680046c.png)
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3 . 判断正误(正确的写正确,错误的写错误)
(1)偶函数的图象一定与
轴相交.( )
(2)奇函数的图象一定经过原点.( )
(3)函数
是偶函数.( )
(4)若
是定义在
上的奇函数,则
.( )
(1)偶函数的图象一定与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)奇函数的图象一定经过原点.
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4407cb294c7d39d3a8694432ca6c111.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3dfb9993f0852e443ea196e974013d.png)
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4 . 判断下列说法是否正确.
(1)2,
这些数组成的集合有5个元素;( )
(2)方程
的解组成的集合有3个元素.( )
(1)2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a55fc3d16d6eb92eecd44ff922e355.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8aaf560b5f804c25b4374a84d586b0.png)
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