已知变量x,y满足约束条件{x+4y-13小于等于0,2y-x+1大于等于0.x+y-4大于等于0,且有无穷多个点(x,y)使目标函数z=x+my取得最小值,则m=A .-2 B .-1 C.1 D.4

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已知变量x,y满足约束条件{x+4y-13小于等于0,2y-x+1大于等于0.x+y-4大于等于0,且有无穷多个点(x,y)使目标函数z=x+my取得最小值,则m=A .-2 B .-1 C.1 D.4
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已知变量x,y满足约束条件{x+4y-13小于等于0,2y-x+1大于等于0.x+y-4大于等于0,且有无穷多个点(x,y)使目标函数z=x+my取得最小值,则m=A .-2 B .-1 C.1 D.4
已知变量x,y满足约束条件{x+4y-13小于等于0,2y-x+1大于等于0.x+y-4大于等于0,且
有无穷多个点(x,y)使目标函数z=x+my取得最小值,则m=
A .-2 B .-1 C.1 D.4

已知变量x,y满足约束条件{x+4y-13小于等于0,2y-x+1大于等于0.x+y-4大于等于0,且有无穷多个点(x,y)使目标函数z=x+my取得最小值,则m=A .-2 B .-1 C.1 D.4
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