题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073012-44733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073012-11540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073012-92610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073013-22666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073013-36608.png)
A.![]() | B.![]() | C.![]() | D.3 |
答案
解析
试题分析:等比数列中
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073014-49395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073014-71371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073014-42232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073014-40884.png)
点评:等比数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073014-23994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073015-62319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073015-14666.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073004-32577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073005-31429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073005-82925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073005-55573.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073004-32577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073005-70804.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073005-49899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073006-85879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014073006-22162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072952-22307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072952-89177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072953-43757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072953-73987.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072953-36754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072953-91964.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072953-36754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072954-34371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072954-51343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072947-99984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072947-96073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072947-97055.png)
A.21 | B.4 | C.84 | D.8 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072937-47915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072937-45410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072937-83453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072938-59406.png)
A.5 | B.10 | C.15 | D.20 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072932-25873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072932-50049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072932-13175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072932-54249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014072933-73366.png)
A.256 | B.510 | C.512 | D.1024 |
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