题目
题型:不详难度:来源:
已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095929-51634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-88252.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-24938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-65680.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-98829.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095929-51634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-65680.gif)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095930-57191.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095931-63531.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095931-47911.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095931-22960.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095931-63531.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095931-54331.jpg)
解析
核心考点
试题【(本小题满分16分)已知数列的前项和数列是正项等比数列,且. (1)求数列和的通项公式;(2)记,是否存在正整数,使得对一切,都有成立?若存在,求出的最小值;若】;主要考察你对等比数列等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095921-44520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095921-79619.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095921-49368.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095922-90935.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095921-79619.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095922-55906.gif)
(2)若数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095922-52058.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095922-92832.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095923-45778.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095914-94185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095914-49876.png)
A. 8 | B. 4 | C. 1 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095908-66002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095909-69279.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095909-58145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095909-30196.png)
A.![]() | B.![]() | C.![]() | D.1004×1005 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095902-59807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095902-19549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095902-31132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095903-47271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095903-42149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095903-51052.png)
A.![]() | B.![]() | C.![]() | D.2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095851-21343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095852-42834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095852-46935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095852-50243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095852-75097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095853-90276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095853-50910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014095853-70834.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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