题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012618-68854.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012619-98335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012619-73311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012619-38421.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012618-68854.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012619-76035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012619-49783.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-93664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-41403.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-52756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-19622.png)
解析
试题分析:(1)已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012621-95373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012621-98432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-93664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012621-67384.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012621-45537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012621-40629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012620-93664.png)
试题解析:(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012622-24216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012622-29279.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012622-52474.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012622-10713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012622-99447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012623-18277.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012623-43776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012623-38851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012623-34029.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012605-43638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012605-21192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012606-87532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012606-73718.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012558-94475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012558-99665.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012558-20450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012558-15861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012559-83989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012559-48723.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012537-49605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012537-70527.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012537-75192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-24619.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012537-49605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-78401.png)
(2)记数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-38851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-70563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-49069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012538-38518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012539-29400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012539-94427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012452-46791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012452-80643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012452-26207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012452-58316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012452-46791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012453-97843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012012434-49368.png)
(Ⅰ)a9,9= ;
(Ⅱ)表中的数82共出现 次.
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