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已知实数x、y满足约束条件http://picflow.koolearn.com/upload/papers/g02/20120923/201209231523505722673.png,则z=2x+4y的最大值为  

发布时间:2021-07-19

A.24

B.20

C.16

D.12

试卷相关题目

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  • 2实数x,y满足x≥2y≥2x+y<6则x+3y的取值范围是(  )

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  • 3设不等式组http://picflow.koolearn.com/upload/papers/g02/20121007/201210070920278452413.png所表示的平面区域是http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092028456548.png,平面区域http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092029039577.pnghttp://picflow.koolearn.com/upload/papers/g02/20121007/20121007092029601548.png关于直线http://picflow.koolearn.com/upload/papers/g02/20121007/201210070920301591509.png对称,对于http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092030693548.png中的任意一点http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092031240462.pnghttp://picflow.koolearn.com/upload/papers/g02/20121007/20121007092031760577.png中的任意一点http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092032306462.png, http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092032864899.png的最小值为

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    B.http://picflow.koolearn.com/upload/papers/g02/20121007/20121007092033928732.png

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  • 5某公司有60万元资金,计划投资甲、乙两个项目,按要求对项目甲的投资不小于对项目乙投资的倍,且对每个项目的投资不能低于5万元,对项目甲每投资1万元可获得0.4万元的利润,对项目乙每投资1万元可获得0.6万元的利润,该公司正确规划投资后,在这两个项目上共可获得的最大利润(  )

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  • 6已知http://picflow.koolearn.com/upload/papers/g02/20120921/20120921172948256506.png满足不等式组http://picflow.koolearn.com/upload/papers/g02/20120921/201209211729483292377.png,则http://picflow.koolearn.com/upload/papers/g02/20120921/201209211729483872009.png的最小值为

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  • 7已知实数x、y满足约束条件http://picflow.koolearn.com/upload/papers/g02/20120923/201209231443293202636.png,则z=2x+4y的最大值为 

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    B.20

    C.16

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  • 9若变量a,b满足约束条件http://picflow.koolearn.com/upload/papers/g02/20121006/201210062056526622933.png,n=2a+3b,则n的最小值为                  

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