题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064034-37395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064035-13327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064035-32927.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064035-38674.png)
解析
试题分析:由于数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064034-37395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064035-48455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064035-41173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064036-53189.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064030-87282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064030-52414.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064025-83116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064025-29264.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064020-79306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064021-29117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064021-41913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064021-83278.png)
(1)求数列{an}的通项公式;
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064013-64355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063955-38572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063956-87906.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063956-46412.png)
(2)求证:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063956-65791.png)
(3)令
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063956-25996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063956-60146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063957-90731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063957-28508.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014063957-82430.png)
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