题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184502-77840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184502-68557.png)
答案
解析
试题分析:作出可行域如图中阴影部分所示,
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184502-68557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184503-49379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184503-87755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184503-87755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184502-68557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184503-12438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184503-66137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184504-45792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184504-80767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184502-68557.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184504-68939.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184436-39795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184436-80460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184436-73198.png)
A.10 | B.8 | C.3 | D.2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184407-44079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184407-77361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184407-35962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184408-79150.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184350-41792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184350-84636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184351-33131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184318-30668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184319-73096.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184319-45952.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184319-96752.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184319-21932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184320-44390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184320-76228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184320-28136.png)
(3)设数列
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184320-55873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184321-32656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184321-82700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184321-12497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184321-56815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184322-83612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184320-55873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184315-53098.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184315-95234.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191016/20191016184316-97385.png)
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