解题方法
1 . 已知集合
,
.
(1)若
,均有
,求实数
的取值范围;
(2)若
,设
,
,求证:
是
成立的必要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdd554d014590a23cfac06de3bda440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac39d8afe38aca6b52b43641a274ea54.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd170c506a8ce70f550f5751ae016ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653bcf7b627c3b87fcb310732313d9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79df3000f987277819847391e0548c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba27566052abbb25340b6499ae3044a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7848c89302a41e9576530313fc3e61b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db40961f2dcdf88ac84a8f739317b191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2022-11-24更新
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5卷引用:河南省学校联盟2022-2023学年高一上学期期中联考数学A试题
名校
2 . 试指出下列各组中,
是
的什么条件? 并证明(3)的结论.
(1)
,
;
(2)
,
;
(3)
,
关于
的方程
有两个实数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee1341c66dde7ae5ea7555fe6acd200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702e85a4a35c2aeacd8a4f6a5d59810d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038db1139d4a60869ede55b87beca9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810ad137bcdad1a2798f4153b7fc7cd4.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1527a7617d3b5a2a795a07457fdb339c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a32d7bc05d73366a3243b881e5ab669.png)
您最近一年使用:0次
2021-09-04更新
|
114次组卷
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2卷引用:江苏省南京市第十三中学2020-2021学年高一上学期9月月考数学试题