题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091447-54362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091448-23219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091448-76287.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091448-44076.png)
A.7 | B.8 | C.9 | D.10 |
答案
解析
解:设公比为
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091448-62337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091449-44948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091449-85403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091449-97503.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091436-82284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091437-16552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091437-28789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091437-91597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091437-93530.png)
A.7 | B.8 | C.15 | D.16 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-89909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-43650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-33412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-99979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-97125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-72956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-62273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091430-97125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-72956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-62273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-79827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091431-36948.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091424-67756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091424-95617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091425-35359.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091424-67756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091424-67756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091425-71165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091425-56528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091417-40042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091417-17369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091417-64052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091417-15733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091418-82084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091418-94166.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091411-99577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091411-29043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091412-42126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091412-48860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014091412-47893.png)
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