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已知x,y满足不等式组则目标函数z=3x+y的最大值为A.B.12C.8D.24
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已知x,y满足不等式组
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADgAAABWCAYAAACaeFU0AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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1xUyowC+LlMX43PcaeU+su4KKCwU1PeBVwRp1uBVQVpb5oFVTgVSU09Z7hz8EOjmqn2I6MOm+aCC
1jP3xAtlDNQIANOesfPbIacqcE+1YQZyBIByNtAdm++Mg1Itt3QrI+LMpukAU61B4zR7ZY5OWqap
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0Jh4HwAAAABJRU5ErkJggg==
)
则目标函数z=3x+y的最大值为( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAAjCAYAAABLuFAHAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAQtJREFU
SEvdVIsNxCAI9VZmHTdxDqZwCU7UKihHU3PJJWfStBX5vAe+F5UVThc7n65w6lgrrs45EYTA5VOI
qONhbPv8QKIsrMUZKY7N8l0ODX8OOn6aTQYPlLOKhnE6Z0RlywlUdo2ZS1zLliAW+3DmjCZm4Syr
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9lSlY3D7bKvKRO8PyQ1ux3lXlZXxXbeFangS/lcX48GFfgOnq0ZlqVI7uAAAAABJRU5ErkJggg==
)
B.12
C.8
D.24
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已知x,y满足不等式组
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A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAAjCAYAAABLuFAHAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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