名校
1 . (1)在等差数列
和等比数列
中,
,是否存在正整数
,使得数列
的所有项都在数列
中,若存在,求出所有的
,若不存在,说明理由;
(2)已知当
时,有
,根据此信息,若对任意
,都有
,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf82c1e9501358a78d5dde6f32fd2d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)已知当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358b212c1a075d80c221c0df5b72c8d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7a1e39dc65e132fa83c02cd0d91168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358b212c1a075d80c221c0df5b72c8d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ef8f0a683e12d585877db46d28933b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
您最近一年使用:0次
名校
2 . 设集合
,选择
的两个非空子集
和
,要使
中最小的数大于
中最大的数,则不同的选择方法共有________ 种.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12247711394ed07a2f6a7c27f73eea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2016-12-04更新
|
2239次组卷
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5卷引用:上海市七宝中学2017-2018学年高二下学期期末数学试题