题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-94731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-66062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-53710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211046-75251.png)
A.1 | B.2 | C.3 | D.4 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-94731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-66062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211045-53710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211046-93062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211046-94987.png)
核心考点
试题【在数列中,,且,则 A.1B.2C.3D.4】;主要考察你对数列的概念与表示方法等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211037-66346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007211037-48406.png)
A.![]() | B.![]() | C.![]() | D.![]() |
已知
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-42202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-63186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-48936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-53151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210914-17966.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210914-43824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-63186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210914-27981.png)
(2)证明:对于数列
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210913-63186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210915-58029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210915-82684.png)
(3)令
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210915-31497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210915-70166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210916-94865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210903-39491.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210751-84535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210752-39965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210752-23937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210516-54250.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210516-20831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210517-40828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210517-33699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191007/20191007210517-29061.png)
A.第6项 | B.第7项 | C.第8项 | D.第9项 |
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