高中数学代数与函数一其他练习题86
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http://picflow.koolearn.com/upload/papers/20140823/20140823160933726715.gif在区间[1,3]上为单调减函数,则实数a的取值范围是

2021-07-16

A.http://picflow.koolearn.com/upload/papers/20140823/20140823160933945474.gif

B.http://picflow.koolearn.com/upload/papers/20140823/20140823160934023424.gif

C.http://picflow.koolearn.com/upload/papers/20140823/20140823160934023424.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823160934116148.gifhttp://picflow.koolearn.com/upload/papers/20140823/20140823160934132485.gif

D.[http://picflow.koolearn.com/upload/papers/20140823/20140823160934147241.gif,http://picflow.koolearn.com/upload/papers/20140823/20140823160934179228.gif]

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