题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225410-26708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225411-94654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225411-79037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225411-83182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225411-57352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225412-69586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225412-41870.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-91166.png)
(1)若输入
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-78090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-19416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-19416.png)
(2)若要数列发生器产生一个无穷的常数数列,试求输入的初始数据
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-54791.png)
(3)若输入
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-54791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-19416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-65199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-24885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225413-54791.png)
取值范围.
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-90889.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-41429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-51697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-30021.png)
解析
试题分析:(1)由题意知
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-86784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-52785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-41429.png)
(2)要使该数列发生器产生一个无穷的常数数列,则有
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225416-13243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225416-22092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225416-18156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-82240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-37081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-83473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-51697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-45324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-78528.png)
(3)解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-23772.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-81266.png)
要使
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-37777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-65316.png)
由于
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-97975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-32432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-44354.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-81158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-79784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-13940.png)
同理
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-23028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-70950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-30021.png)
试题解析:(1)由题意知
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-86784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-52785.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225414-41429.png)
(2)要使该数列发生器产生一个无穷的常数数列,则有
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225416-13243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-82030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-32444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225416-18156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-82240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-37081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-83473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-51697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225417-45324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-78528.png)
(3)解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-23772.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225418-81266.png)
要使
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-37777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-65316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-97975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225419-32432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-44354.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-81158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-79784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225420-13940.png)
依次类推可得数列
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-23028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225421-70950.png)
综上所述,
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225415-30021.png)
核心考点
试题【对任意函数,可按流程图构造一个数列发生器,其工作原理如下:①输入数据,数列发生器输出;②若,则数列发生器结束工作;若,则将反馈回输入端再输出,并且依此规律继续下】;主要考察你对算法的概念特点等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225355-24680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225355-80494.png)
A.22 | B.46 | C.94 | D.190 |
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225347-56730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225348-59007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225348-59655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225348-12205.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225348-36144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225341-24805.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225333-72310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191030/20191030225303-13047.jpg)
在此流程图中,①②两条流程线与“推理与证明”中的思维方法匹配正确的是( )
A.①—综合法,②—分析法 | B.①—分析法,②—综合法 |
C.①—综合法,②—反证法 | D.①—分析法,②—反证法 |
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