题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001303-40281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-61608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-36606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-32797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-30409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-43733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-80533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001305-32426.png)
A.64 | B.128 | C.-64 | D.-128 |
答案
解析
试题分析:在等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001303-40281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-36606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001306-61487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001306-70704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-32797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001306-55110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001306-18639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001306-80778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001307-64098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001307-86989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001304-30409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001307-60230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001307-23044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001308-68137.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001242-64597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-55819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-83129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-21993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-83129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-31048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-15124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-46812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-38032.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001242-64597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-15124.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-86491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001244-76296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001243-55819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001245-88051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001245-54097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001226-43035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001226-98421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001226-43035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001236-72529.png)
A.24 | B.48 | C.66 | D.132 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-50121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-48773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-25110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-65761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-60137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001201-86396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001201-18903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001201-93082.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001201-47135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001201-26415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-45658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-10240.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-89173.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-53335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-97265.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001202-78196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001203-95861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001203-24053.png)
②设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-48773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001203-84653.png)
如果
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001203-39492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-48773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001203-84653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-65761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001204-37622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001204-69725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001200-48773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001204-13005.png)
有取值构成的集合;若不存在,说明理由.
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001142-33404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001142-14126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001142-14623.png)
A.21 | B.30 | C.35 | D.40 |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001123-59270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001123-66569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001124-60596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001124-87547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001124-47747.png)
(I)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001123-59270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001124-60596.png)
(II)若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001124-86862.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001125-50324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001125-59866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012001125-50324.png)
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