题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212240-86356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212240-91556.png)
(1)如果
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212240-44358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212240-87937.png)
(2)如果
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212241-45221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212241-87520.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212241-66299.png)
解析
试题分析:(1)因为
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212241-20585.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212241-52139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212242-39216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212242-76938.png)
(2)有以下几种情况:
①当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212242-44791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212242-52994.png)
②当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212243-65262.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212243-55047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212243-10879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212243-92491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212244-95137.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212244-46926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212244-87683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212244-73653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212244-12155.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212245-56861.png)
③当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212245-54873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212242-52994.png)
④当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212245-85543.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212243-55047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212245-59298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212246-53137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212246-36387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212246-30157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212246-13291.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212246-60667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212247-16513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212247-94847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212247-95026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212247-94450.png)
⑤当
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212247-40069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212248-82546.png)
综上可知
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212248-60750.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212125-86383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212126-32808.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212125-86383.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212125-86383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212126-82842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212126-85116.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212126-89368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212126-91447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212056-93077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212056-90080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212057-39001.png)
(1)写出
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212057-25404.png)
(2)是否存在一个数列
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212056-93077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212057-65647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212057-92649.png)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008212057-12741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211907-23011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211907-48259.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-67801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-80835.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-99221.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-93605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-67801.png)
(1)判断数列
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211909-59012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211909-36668.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-67801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211909-18923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211908-80835.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211909-69420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211910-91782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211910-46473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211910-89217.png)
均构成“Γ数列”,求
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211909-69420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211910-91782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211827-83045.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211827-67363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211827-39193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211827-20270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211828-34681.png)
A.2011 | B.2012 | C.4022 | D.4023 |
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211729-15628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211729-18611.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211729-90751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211729-53724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211729-13706.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211730-69228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191008/20191008211730-67776.png)
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