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已知实数 http://picflow.koolearn.com/upload/papers/20140824/20140824052401622404.png,函数 http://picflow.koolearn.com/upload/papers/20140824/201408240524016381175.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824052401638679.png,则实数 http://picflow.koolearn.com/upload/papers/20140824/20140824052401654278.png的取值范围是(    )

发布时间:2021-07-21

A.http://picflow.koolearn.com/upload/papers/20140824/20140824052401685738.png

B.[-2,-1]

C.http://picflow.koolearn.com/upload/papers/20140824/20140824052401700523.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824052401716534.png

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