高中数学代数与函数一其他练习题111
题目内容

在平面直角坐标系中,不等式组 http://picflow.koolearn.com/upload/papers/20140824/201408240455351351061.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824045535151283.png为常数)表示的平面区域的面积是9.那么实数 http://picflow.koolearn.com/upload/papers/20140824/20140824045535151283.png的值为(  )

2021-07-19

A.http://picflow.koolearn.com/upload/papers/20140824/20140824045535167468.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824045535198483.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824045535213271.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824045535229206.png http://picflow.koolearn.com/upload/papers/20140824/201408240455352454000.png

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