题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093740-24643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093741-91876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093740-24643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093741-62333.png)
A.24 | B.48 | C.66 | D.132 |
答案
解析
试题分析:数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093740-24643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093741-13272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093741-28400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093741-62333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093742-73045.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093742-46919.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-21635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-62311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-19458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-88174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093717-46375.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093717-17484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093717-54137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093717-28340.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093718-37643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093718-24732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093718-40774.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093718-31097.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093718-99316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093719-57589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093719-90036.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093719-49968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093719-26910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093720-31136.png)
②设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-62311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093720-60927.png)
如果
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093720-45543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-62311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093720-60927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-88174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093720-10446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093721-93164.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093716-62311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093721-89737.png)
有取值构成的集合;若不存在,说明理由.
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093705-12687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093705-80402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093706-40996.png)
A.21 | B.30 | C.35 | D.40 |
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093532-14984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093532-87405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093532-80826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093533-23641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093539-45612.png)
(I)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093532-14984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093532-80826.png)
(II)若
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093539-88954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093539-77592.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093539-63227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093539-77592.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093457-74501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093457-37801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093457-21252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093458-37394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093458-88705.png)
A.1 | B.2 | C.4 | D.8 |
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093332-39986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093332-73692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009093332-88885.png)
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