题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020232-50664.gif)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020232-79276.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020232-99767.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020232-47568.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020232-91505.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020233-65407.gif)
目标函数为
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020233-26474.gif)
二元一次不等式组等价于
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020233-68205.gif)
作出二元一次不等式组所表示的平面区域,即可行域.---
如图:-------------------------------8分
作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020233-92339.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-20953.gif)
平移直线
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-87606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-87606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-53575.gif)
联立
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-21309.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-70255.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020235-54986.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020234-53575.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020235-10516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020235-85222.gif)
答:该公司在甲电视台做100分钟广告,在乙电视台做200分钟广告,公司的收益最大,最大收益是70万元.----------------------------------------------14分
核心考点
试题【(本题满分14分)本公司计划2008年在甲、乙两个电视台做总时间不超过300分钟的广告,广告总费用不超过9万元,甲、乙电视台的广告收费标准分别为元/分钟和200】;主要考察你对简单的线性规划等知识点的理解。[详细]
举一反三
鱼类 | 鱼料A | 鱼料B | 鱼料C |
鲫鱼/kg | 15g | 5g | 8g |
鲤鱼/kg | 8g | 5g | 18g |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020222-49073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020222-45916.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020209-38711.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020209-32621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020210-92138.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020210-42619.gif)
A.4 | B.11 | C.12 | D.14 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020204-98406.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020205-27551.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020205-30071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017020205-49179.gif)