高中数学代数与函数一其他练习题111
题目内容

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/20140824/201408240447587101017.png给定. 若 http://picflow.koolearn.com/upload/papers/20140824/20140824044758725612.png为D上的动点,点A的坐标为 http://picflow.koolearn.com/upload/papers/20140824/20140824044758741463.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824044758757707.png的最大值为(   )

2021-07-19

A.3

B.4

C.http://picflow.koolearn.com/upload/papers/20140824/20140824044758772391.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824044758788378.png

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