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已知 http://picflow.koolearn.com/upload/2014-04/29/ec354642-f45c-4ac1-99f0-19f390ce912a/paper.files/image056.png,对 http://picflow.koolearn.com/upload/2014-04/29/ec354642-f45c-4ac1-99f0-19f390ce912a/paper.files/image057.png,使 http://picflow.koolearn.com/upload/2014-04/29/ec354642-f45c-4ac1-99f0-19f390ce912a/paper.files/image058.png成立,则a的取值范围是(     )

发布时间:2021-08-04

A.[-1,+http://picflow.koolearn.com/upload/2014-04/29/ec354642-f45c-4ac1-99f0-19f390ce912a/paper.files/image013.png)

B.[-1,1]

C.(0,1]

D.(-http://picflow.koolearn.com/upload/2014-04/29/ec354642-f45c-4ac1-99f0-19f390ce912a/paper.files/image013.png,l]

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