题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094748-78898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094748-68721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094748-88991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094749-23380.png)
A.第一象限 . | B.第二象限 . | C.第三象限 . | D.第四象限 . |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094749-74562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094749-88103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094749-33433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094750-63342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094750-37200.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094750-93262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094750-54000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094751-23817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094751-60596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094751-99305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094751-39484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094751-16158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094752-86412.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094734-57808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094735-94672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094735-10771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094735-42002.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
A.![]() | B.![]() | C.![]() ![]() | D.一![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094714-38389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094715-30782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094715-91304.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094714-38389.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094715-91940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094715-42919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094715-95203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094716-19682.png)
已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094701-31185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094701-42502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094701-72252.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094701-70111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014094702-14963.png)
(I)求c的值;
(Ⅱ)求数列{an}的通项公式.
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