题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031322-26037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-56807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-53770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-36418.png)
A.56 | B.58 | C.62 | D.60 |
答案
解析
试题分析:当
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-35090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-97347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031324-46754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031324-67321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031324-22185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031323-36418.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031311-57396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031311-79920.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031311-64996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031311-83783.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031312-74233.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031312-62224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031312-91549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031312-66944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031312-38558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031255-48810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031256-50591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031255-48810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031256-61317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031256-64839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031256-68742.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031255-48810.png)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031257-27065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031257-21767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031256-61317.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031257-80284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031250-82723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031250-75659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031250-11199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031251-45760.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031241-61455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031241-68082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031241-16858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031241-88800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031242-81357.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031233-19476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031234-87199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031234-35960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031234-10535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031234-31743.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
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