高中数学代数与函数一其他练习题111
题目内容

(5分)(2011?广东)已知平面直角坐标系xOy上的区域D由不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240519058771400.png给定.若M(x,y)为D上的动点,点A的坐标为 http://picflow.koolearn.com/upload/papers/20140824/20140824051905986600.png,则z= http://picflow.koolearn.com/upload/papers/20140824/20140824051906002321.png? http://picflow.koolearn.com/upload/papers/20140824/20140824051906017328.png的最大值为(       )

2021-07-19

A.3

B.4

C.3http://picflow.koolearn.com/upload/papers/20140824/20140824051906033416.png

D.4http://picflow.koolearn.com/upload/papers/20140824/20140824051906033416.png

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