题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-81202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-52108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-28272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-38732.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091230-52873.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-81202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-52108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-28272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091229-38732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091230-52873.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091207-52079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091207-95331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091207-81174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091207-86201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091208-55693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091208-18296.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091208-52425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091208-90727.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091209-86872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091209-64627.png)
(Ⅱ)求和:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091209-82159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091118-78149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091118-20227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010091118-11816.png)
A.![]() | B.![]() | C.![]() | D.198 |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090758-47811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090805-66461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090805-50664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090805-70198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090805-49469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090805-89769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090806-70892.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090806-13679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090806-57719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090742-76080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090743-28504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090742-76080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090743-64745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090743-52352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090716-39822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090716-76171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090716-13916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090717-30298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090727-16289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090727-92467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090728-29171.png)
(Ⅰ)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090716-39822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090716-76171.png)
(Ⅱ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090728-91472.png)
(III)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090728-37065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090728-56894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090729-60067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090729-77361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090729-55961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010090729-96073.png)
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