题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-16385.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-39989.gif)
(1)求证:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-16775.gif)
(2)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-16385.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-15367.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-47705.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-59305.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-31284.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-15367.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-77311.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-42328.gif)
(2)由(1)知,
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-75855.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103944-59305.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103945-42563.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103945-75040.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103943-15367.gif)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103931-10702.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103932-91761.gif)
A.![]() | B.![]() | C.![]() | D.1 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103927-29545.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103927-14193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103927-46416.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103928-60226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103928-94345.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103928-51079.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103928-36533.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103922-57292.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103922-44391.gif)
A.1 | B.-1 | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103917-15646.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103917-59156.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103917-35460.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103918-26803.gif)
A.12 | B.14 | C.20 | D.22 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103911-78139.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103911-84000.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103911-55743.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014103912-36876.gif)
A.![]() | B.![]() | C.![]() | D.2 |
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