19-20高一·上海·课后作业
解题方法
1 . 已知集合
求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1dd8db83f586d389ef8d217b113f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
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2 . 已知集合
与集合
,其中
是一个二次项系数为1的二次函数.
(1)判断
与
的关系;
(2)若
是单元素集合,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4536c56805fc47983a73597d75ac57a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc272a261ecb9edcfdf8335efc9af92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad96b50521f4bbf3d436d05dc258083d.png)
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19-20高一·上海·课后作业
3 . 已知
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a5425c4b7aadf955cee9e7793688a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
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4 . 设集合
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0efaf4983135661fc969222c8fefae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607398cecf639b17a36b6a646c07c124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
您最近一年使用:0次