题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054457-96536.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054457-82394.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-58138.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-29059.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-81964.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-81964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-72972.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-77474.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054459-39262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054459-25793.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054459-82924.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054459-88681.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054459-99947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054500-23199.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054500-21691.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054458-72972.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054441-30543.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054441-91382.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054441-36427.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054441-24929.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054441-86877.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054442-70509.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054442-23768.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054442-39066.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054442-58360.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054443-29272.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054443-27008.gif)
(1) 求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054443-74197.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054443-96693.gif)
(2) 求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054443-12047.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054444-62618.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054444-97014.gif)
(3) 证明存在
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054444-81674.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054444-16725.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054444-81674.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054430-27705.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054419-45727.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054419-17611.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054419-51683.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054419-59460.gif)
(该直线不过点O),则S2008等于
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-78251.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-21664.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-17065.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-97347.gif)
(1)求和:①
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-12748.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054407-90957.gif)
(2)由(1)的结果归纳概括出关于正整数
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-21664.gif)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054407-55938.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054406-21664.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054407-38369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054357-18491.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054358-78185.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013054358-93287.gif)
A.椭圆 | B.双曲线 | C.抛物线 | D.线段 |
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