题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-70062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-95723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-81100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-68312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-73850.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-70062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-95723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-81100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091222-68312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091224-17498.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091224-96262.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091216-33740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091217-85188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091217-72604.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091206-63031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-90111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-54266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-26835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-56615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-72189.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-48107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091207-27790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091208-49463.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-15878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-71851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-66562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-71060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-67322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-66525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-30589.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-15878.png)
(2)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-15878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-73591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-93398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-54982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-30589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-93398.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091155-82312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091156-84028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091154-66562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091156-45274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091146-52259.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091147-57939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091147-42480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091147-52025.png)
A.9 | B.10 | C.![]() | D.25 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091137-58539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091138-10863.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091138-36930.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091138-81790.png)
A.2 | B.![]() | C.![]() | D.![]() |
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