题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023224-31466.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023224-61573.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-67850.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-10325.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-74411.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-37729.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-14374.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-82517.gif)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023224-31466.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023225-37729.gif)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-68435.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-21299.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023224-61573.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-32311.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-80065.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-29749.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-19419.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-26508.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-81226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023228-45596.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023228-37943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023228-62477.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023226-80065.gif)
又因为
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023228-81214.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023228-39370.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023229-73790.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023229-37816.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023229-40521.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023229-14233.gif)
所以:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-29749.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023229-80637.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023227-19419.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-45809.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-33915.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-79532.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-90226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-90226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-18770.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-15646.jpg)
(1)记曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-90226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-15922.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-60637.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-35423.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-15922.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023212-60637.gif)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023213-11453.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023211-90226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023213-11453.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023213-61444.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023213-11453.gif)
已知数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023200-50734.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023200-91653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023200-21022.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023200-19812.gif)
且对任意
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023200-21022.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023201-82181.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023201-57281.gif)
(2)求通项
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023201-92938.gif)
(3)令
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023201-57835.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023202-82540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023145-68912.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023145-95093.jpg)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023146-97060.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023146-50038.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023146-90516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023146-40891.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023146-83736.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023145-95093.jpg)
在函数
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023147-89042.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023147-23852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023147-89042.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023147-87366.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023147-45558.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023145-95093.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023145-95093.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023140-32755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023140-11934.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023140-39490.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023141-63698.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023140-32755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023141-51331.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023129-35696.gif)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023129-25013.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-76814.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-73107.gif)
(2)是否存在常数
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-88057.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-78893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-22698.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013023130-88057.gif)
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