题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021815-51556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021815-92258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021816-21121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021816-68323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021816-65885.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:设等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021827-32371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021838-52961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021839-99344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021839-99006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021839-43839.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021748-74561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021759-78958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021759-61494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021800-51570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021800-92850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021800-35091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021800-32634.png)
A.-2014 | B.2014 | C.-3973 | D.0 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021723-50453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-60443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-11776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-49400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-57755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-59807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-95440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-44170.png)
(1)分别求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021723-50453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-49400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-44161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021725-50230.png)
(2)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021725-81522.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021724-59807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021725-62431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021725-62431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021725-62431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021654-49319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021654-76365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021654-82404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021655-52498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021655-50098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021649-42018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021649-87488.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021650-87694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021649-42018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021650-46471.png)
A.4 | B.5 | C.6 | D.7 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021627-50046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021627-90156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012021627-73667.png)
A.![]() | B.12 | C.![]() | D.6 |
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