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变量 http://picflow.koolearn.com/upload/papers/20140824/20140824014056627403.png满足约束条件 http://picflow.koolearn.com/upload/papers/20140824/201408240140566431123.png,则目标函数z=3x+y-3的取值范围是    (   )

发布时间:2021-07-20

A.http://picflow.koolearn.com/upload/papers/20140824/20140824014056674530.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824014056721558.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824014056752432.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824014056768385.png

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