高中数学代数与函数一函数练习题30
题目内容

函数 http://picflow.koolearn.com/upload/papers/20140824/20140824005137910881.png的定义域为[-1,1],且存在零点,则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824005137942278.png的取值范围是(   )

2021-07-26

A.http://picflow.koolearn.com/upload/papers/20140824/20140824005137942458.png

B.http://picflow.koolearn.com/upload/papers/20140824/20140824005137957408.png

C.http://picflow.koolearn.com/upload/papers/20140824/20140824005137973487.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824005137988456.png

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