高中数学代数与函数一其他练习题104
题目内容

当x.yi满足条件 http://picflow.koolearn.com/upload/papers/20140823/20140823141032502606.png时,变量U= http://picflow.koolearn.com/upload/papers/20140823/20140823141032580568.png的取值范围是

2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140823/20140823141032595561.png

B.http://picflow.koolearn.com/upload/papers/20140823/20140823141032595561.png

C.http://picflow.koolearn.com/upload/papers/20140823/20140823141032626591.png

D.http://picflow.koolearn.com/upload/papers/20140823/20140823141032658594.png

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