题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063620-93872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-48020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-38850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-61969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-53039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063622-36419.png)
A.26 | B.13 | C.52 | D.156 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-48020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-38850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-61969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063621-53039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063622-36419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063622-45070.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063530-45362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063530-67823.png)
(Ⅰ)求数列{
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063530-45362.png)
(Ⅱ)求数列{|
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063530-22784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063530-53256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063507-37482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063507-44391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063507-29557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063507-12319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063508-19582.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063507-37482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063508-90193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-87312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-94935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-97897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-67800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-96240.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-87312.png)
(Ⅱ)等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-19492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-94935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-73112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-75431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-30521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-61505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-73112.png)
(III)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063444-68323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063443-94935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063445-72615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063426-47719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063426-77724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063427-23279.png)
A.8 | B.-8 | C.±8 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063420-95571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063420-57588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063421-93903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063421-87314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191010/20191010063421-93903.png)
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