20-21高一·江苏·课后作业
解题方法
1 . 设x为实数,
,
.若
,求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbefb4190e6d31cf43ce5258ebf325c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26428d3ca76438dfc81e2fbf21bd671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
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20-21高一·江苏·课后作业
解题方法
2 . 设a为实数,
,
.若
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1433a23495e91a6986f3966f93dcb67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4ed058a7220aa6005fa070801c029a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
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20-21高一·江苏·课后作业
解题方法
3 . 高一年级某班共有45人,其中文艺爱好者20人,体育爱好者15人,文艺、体育均不爱好的20人,问:文艺、体育均爱好的有多少人?
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20-21高一·江苏·课后作业
4 . 设A,B均为有限集,A中元素的个数为m,B中元素的个数为n,
中元素的个数为s,下列各式能成立吗?
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15d13bc3e5f135674e878895d0aa506.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220bef2d6dcbc1293633d9a52a4406ee.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557af2c37abf8c4509fa7810ce2b40b7.png)
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5 . 已知
,
,求
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf226667132bd86a8662e6ad7676f0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba4c77c1dd34e622c189d505476ad20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
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20-21高一·江苏·课后作业
6 . 求满足
的集合A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c2064261ca92289120343b73c6498d.png)
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7 . 用适当的方法表示“小于5的自然数”所构成的集合.
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20-21高一·江苏·课后作业
8 . 利用Venn图,探求
,
,
三者之间的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9279c275a0d1e3967980c29474ad1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c093cbde3d3472d1f7f2b0dff2bc4881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7817b055b567e64ea8914a5d6e9b45d.png)
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20-21高一·江苏·课后作业
9 . 已知
,对于下列全集U,分别求
:
(1)
; (2)
;(3)
; (4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3d8ab64ba17a89d8e2a9f170690af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c093cbde3d3472d1f7f2b0dff2bc4881.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0db042244798ce39ab3d08422fda72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e00990b505bd93c8ff0faa66993043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeac10dbc350d0cd81f3e1432336b65.png)
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