高中数学代数与函数一其他练习题81
题目内容

定义在R上的函数f(x)满足f(4)=1,f"(x)为f(x)的导函数,已知y=f"(x)的图象如图所示,若两个正数a,b满足http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321062714.png的取值范围是http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321383615.png

2021-07-15

A.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912321691392.png

B.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912322002383.png

C.http://picflow.koolearn.com/upload/papers/g02/20120902/201209021912322311251.png

D.(﹣∞,3)

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