高中数学代数与函数一其他练习题138
题目内容

在R上定义运算 http://picflow.koolearn.com/upload/papers/20140823/20140823144338619574.gif,若不等式 http://picflow.koolearn.com/upload/papers/20140823/20140823144338635750.gif成立,则实数a的取值范围是(   )

2021-07-21

A.http://picflow.koolearn.com/upload/papers/20140823/20140823144338650283.gif

B.http://picflow.koolearn.com/upload/papers/20140823/20140823144338666297.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823144338697465.gif

D.http://picflow.koolearn.com/upload/papers/20140823/20140823144338713348.gif

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