1 . 设数列
满足
,
.
(1)证明:数列
为等比数列,并求数列
的通项公式;
(2)设
,证明:数列
中任意三项不可能构成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da175007bcc212205a27cab9c639ed17.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27fe0553c07ff11903e2d8a972aeb2b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ac25391189c6623b67564146c97c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
您最近一年使用:0次
2 . 已知数列
满足:
,
,
;数列
满足:
.
(1)求数列
,
的通项公式;
(2)证明:数列
中的任意三项不可能成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da5b391236b01506c4dd47abce906db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358175aa6995341d764f4fd01c40f698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0712a0679c53428e4a901d0e623b8b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9edc3ba50573576bcc89f2fdec5f1.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
(2)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
您最近一年使用:0次
2018-06-24更新
|
402次组卷
|
3卷引用:江苏省南京市秦淮中学2017-2018高一下学期期末考试数学模拟试题
3 . 用反证法证明命题“若
能被2整除,则
中至少有一个能被2整除”,那么反设的内容是________ .
![](https://img.xkw.com/dksih/QBM/2016/5/23/1572644593278976/1572644599070720/STEM/a9cd2dc015114338bc7b014ca176763a.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2016/5/23/1572644593278976/1572644599070720/STEM/3a50cb3cb7694aeabe042051c8cf9d97.png?resizew=27)
您最近一年使用:0次