题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072543-16458.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072543-17180.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-15416.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-43567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-40861.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-74837.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-61045.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-70547.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-20643.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-19465.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-67918.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-40861.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072546-81653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072543-16458.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072543-17180.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072546-20320.gif)
(2)对于
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072546-89802.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072544-43567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072546-75684.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072547-43722.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072547-85289.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072547-23652.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072547-18653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072548-81709.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072545-67918.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072529-25900.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072529-50644.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-24883.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072529-25900.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-78231.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-61629.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-27049.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072531-81394.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072530-34283.jpg)
设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072517-48943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072518-55704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072518-88162.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072518-48577.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072518-95840.gif)
(I)设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072519-56684.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072519-36976.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072519-20942.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072519-13688.jpg)
(II)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072517-48943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072505-43516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072505-15238.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072506-44804.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072450-26528.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072451-27801.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072451-48183.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072451-19520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072451-70808.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072451-59776.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072452-84063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072452-47199.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-47328.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-46230.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-11947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-74670.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-47328.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072440-14223.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072440-34474.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072439-74670.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013072440-94570.gif)
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