已知约束条件,目标函数z=3x+y,某学生求得x=, y=时,
zmax=, 这显然不合要求,正确答案应为( )
A.x="3," y="3" , zmax="12" | B.x="3," y="2" , zmax=11. |
C.x="2," y=" 3" , zmax= 9. | D.x="4," y=" 0" , zmax= 12. |
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已知约束条件,目标函数z=3x+y,某学生求得x=, y=时,
zmax=, 这显然不合要求,正确答案应为( )
A.x="3," y="3" , zmax="12" | B.x="3," y="2" , zmax=11. |
C.x="2," y=" 3" , zmax= 9. | D.x="4," y=" 0" , zmax= 12. |