题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131527-63985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131527-54460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131528-41336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131528-37918.png)
(Ⅰ)求证数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131527-63985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131528-92913.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131529-59959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131529-92390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131529-12424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131529-85341.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131530-39027.png)
(Ⅱ)解:由(Ⅰ)可得:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131530-93679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131530-38255.png)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131508-68817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131509-92916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131509-33497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131509-99878.png)
(Ⅰ)求证数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131509-52736.png)
(Ⅱ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131509-25535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131510-99473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131510-26360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131456-43246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131457-73322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131457-83201.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131428-91612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131429-92377.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131429-98503.png)
A.12 | B.24 | C.36 | D.48 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131410-56936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131410-22604.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131410-96322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131410-76047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131411-50615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131400-97681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131400-19010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131400-68471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131401-52907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131401-25528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131401-58330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012131401-29343.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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