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http://picflow.koolearn.com/upload/papers/20140824/20140824002949396266.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824002949411310.png满足 http://picflow.koolearn.com/upload/papers/20140824/201408240029494271009.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824002949443598.png仅在点 http://picflow.koolearn.com/upload/papers/20140824/20140824002949458432.png处取得最小值,则 http://picflow.koolearn.com/upload/papers/20140824/20140824002949474283.png的取值范围是(   )

发布时间:2021-07-16

A.(-1,2)

B.(-2,4)

C.(-4,0]

D.(-4,2)

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