题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070842-58183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070842-70316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070842-31230.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-65832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-76850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070842-58183.png)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-37897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-81946.png)
(3)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-35618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070844-87278.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070844-85253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070844-30791.png)
解析
试题分析:(1)分别令
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070844-50941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070845-32710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070845-97225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070845-78907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070845-99087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070843-35618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-28011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-43219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-43219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-43219.png)
试题解析:(1)解:分别令
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070844-50941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-74037.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-92494.png)
(3)由(2)知:
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-64634.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070847-61868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070847-38277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070847-92195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070847-87711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070846-28011.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070821-50655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070821-46964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070821-17433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070821-87011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070822-77359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070822-97414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070822-38713.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-73518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-98501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-70091.png)
(1)证明数列
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-41593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-73518.png)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070812-99315.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070813-74292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070813-93129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070813-52049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070801-33429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070801-23276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070801-33429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070802-88103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070739-26756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070739-53904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070739-91442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070740-16669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070740-65351.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070740-59436.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070739-26756.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070740-26099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070741-79467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070740-65351.png)
(3)在满足条件(2)的情形下,设
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070741-33490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070741-45829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070739-53904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070741-32337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070741-36968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070710-70829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070710-64329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070710-88718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070711-33598.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070711-41219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070711-62943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070711-94925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191014/20191014070711-53280.png)
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