名校
1 . 已知集合
,集合
.
(1)若
,求实数
的取值范围;
(2)是否存在实数
,使得
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e54759afe6397edbea49c9c165a98f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222048c84bab94755c41642f27a1a594.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-09-17更新
|
1446次组卷
|
7卷引用:山东省青岛市2019-2020学年高一上学期期中数学试题
名校
解题方法
2 . 已知集合
集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d67e670e1a26f771c5e472ad216342.png)
(Ⅰ)求
;
(Ⅱ)若集合
满足
求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ab036e980ab409b06dd01c5b2973da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d67e670e1a26f771c5e472ad216342.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78953fb91ae3836afcffa442187d21f5.png)
(Ⅱ)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c9ad981b602cdb638dcc6a00ce3bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d1aaa3a37f865fec71c1d56904662d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-04-08更新
|
1172次组卷
|
4卷引用:山东省青岛市第一中学2017-2018高一上学期期中考试