题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061130-91660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-60288.png)
答案
解析
试题分析:做出不等式对应的可行域如图,
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-17016.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-60288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-48069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-48069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061132-53551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-48069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061131-60288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061132-58345.png)
点评:借助于平面区域特性,用几何方法处理代数问题,体现了数形结合思想、化归思想.线性规划中的最优解,通常是利用平移直线法确定
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061125-59624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061125-57240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061125-55638.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061119-16185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061114-31163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061114-78696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061115-43587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061115-37898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061115-94672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061112-65820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061107-18741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-51082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-40694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-11308.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-11308.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-76364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061108-85439.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061109-50809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017061109-63614.png)
A.![]() | B.![]() | C.![]() | D.![]() |
最新试题
- 1质量m=1kg的小滑块(可视为点)放在质量M=1kg的长木板右端,木板放在光滑水平面上。木板与滑块之间摩擦系数μ=0.1
- 2某主族元素最高价氧化物对应水化物的分子式是H2RO3,则其氢化物的分子式是A.RH4B.RH3C.H2RD.HR
- 3下列正确说法的个数是①同位角相等;②对顶角相等;③等角的补角相等;④两直线平行,同旁内角相等 [ ]A.1B.2
- 4Help! My door shut after me and the eggs _________ in the pa
- 5综合学习(11分)小题1:下表是上海市初中语文教材中的部分单元与课文,请把表格填写完整。(6分)单元主题选文篇目有家真好
- 6完形填空。 I"ve often puzzled over something that happened to
- 7 ___ not to miss the flight at 15:20, the manager set out
- 8(8分)央视日前曝光河北一些企业用皮革废料作原料,制作有毒胶囊并流向药品企业,最终进入不明真相的消费者腹中。“毒胶囊”事
- 9Researchers claimed that waitresses who wear red get up to 2
- 10阅读材料,回答问题为全面贯彻党的十七大和十七届三中全会精神,深入贯彻落实科学发展观,大力实施科教兴国战略、人才强国战略、
热门考点
- 1计算的值。
- 2Many crimes and social problems are caused by children. Desp
- 3城镇人口占总人口比例的大小表示城镇化水平的高低,由统计图可知,我国城镇化水平提高最快的时期是 ( ).
- 4______ do you want ? [ ]A. How much milk (牛奶) B. How muc
- 5将一个各个面上涂有颜色的正方体锯成64个同样大小的小正方体,从这些小正方体中任取一个,其中恰有2面涂有颜色的概率是(
- 6历史上许多科学家因其卓越的科学成就而被人们永远铭记,他们的名字被命名为某一物理量的单位.那么,下列哪个物理量的单位不是以
- 7
- 8已知二次函数f(x)=ax2+bx+c(a,b,c∈R,a≠0),f(-2)=f(0)=0,f(x)的最小值为-1.(1
- 9下列金属中,只能与硝酸银溶液反应,不能与稀硫酸反应的是( )A.镁B.银C.铜D.铝
- 10以下不属于威胁生物多样性的原因是[ ]A.乱砍乱伐森林 B.环境污染 C.建立自然保护区 D.不限制引进外国物种