高中数学代数与函数一其他练习题98
题目内容

已知点P(x,y)在由不等式组http://picflow.koolearn.com/upload/papers/g02/20120827/201208270757583043575.png确定的平面区域内,O为坐标原点,点A(﹣1,2),则|http://picflow.koolearn.com/upload/papers/g02/20120827/20120827075758335700.png|cos∠AOP的最大值是

2021-07-16

A.﹣http://picflow.koolearn.com/upload/papers/g02/20120827/201208270757583671004.png

B.http://picflow.koolearn.com/upload/papers/g02/20120827/201208270757583971285.png

C.1

D.http://picflow.koolearn.com/upload/papers/g02/20120827/20120827075758427748.png

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