题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043440-68694.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043440-53490.png)
解析
解:记
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043440-85810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043441-66625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043441-16937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043441-21989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043440-53490.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043433-73374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043433-83578.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043433-14103.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043434-28530.png)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043434-22091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043434-14114.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043434-34769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043427-27603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043427-68616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043428-28212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043428-66428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043422-63838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043422-90321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043422-47789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043416-73081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043416-19096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043416-19096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043416-73579.png)
①求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043417-13639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043417-62478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043416-73081.png)
③设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043417-54671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043417-59766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043418-17924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043418-35550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043404-66565.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043405-97652.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015043405-37559.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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