题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064532-82256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064532-75142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064532-83746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064532-40227.png)
答案
解析
试题分析:设
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-61256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-61256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-73455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-16354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-89465.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-61256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064533-43671.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064534-20913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064534-79169.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064534-34428.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064520-39398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064520-63316.png)
A.15 | B.12 | C.9 | D.6 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064456-91020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064457-97518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064457-58928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064457-16515.png)
A.5 | B.6 | C.7 | D.8 |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064438-52045.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064438-20792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064438-10864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064438-68710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064439-22676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064438-20792.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-22094.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-25381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-68885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-68885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-39016.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-82768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-52281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-63888.png)
(Ⅱ)当数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-82768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064418-68885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064406-97883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064406-75769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-19517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-19517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-11246.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-21866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-71731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064408-33002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064408-12332.png)
(Ⅱ)当数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-71731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014064407-19517.png)
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