题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-26987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-70620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-89231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-18374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192040-73909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-89231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192039-70620.png)
A.9 | B.8 | C.7 | D.6 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192040-70396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010192040-33810.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191744-35876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191744-85694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191744-35876.png)
其前
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191744-97167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191745-98716.png)
在数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191117-77811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191117-89139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191117-80101.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191117-77811.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191118-21838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010191118-23143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190914-70239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190914-93446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190915-31528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190741-96645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190742-37602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190742-74682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190742-73567.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190742-29509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190743-42786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190741-96645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190743-13627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190743-30026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190743-72051.png)
A.-110 | B.-90 | C.90 | D.110 |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190509-97039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190509-87847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190510-85939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010190510-40096.png)
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