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已知关于 http://picflow.koolearn.com/upload/papers/20140823/20140823212341835266.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823212341867990.png<0对 http://picflow.koolearn.com/upload/papers/20140823/20140823212341882433.png都成立,则实数 http://picflow.koolearn.com/upload/papers/20140823/20140823212341898337.png的取值范围是(    )

发布时间:2021-07-20

A.[-2,http://picflow.koolearn.com/upload/papers/20140823/20140823212341898383.png

B.(-2, http://picflow.koolearn.com/upload/papers/20140823/20140823212341898383.png]

C.(http://picflow.koolearn.com/upload/papers/20140823/20140823212341929324.png,-2]∪(http://picflow.koolearn.com/upload/papers/20140823/20140823212341898383.png,http://picflow.koolearn.com/upload/papers/20140823/20140823212342101335.png)

D.(http://picflow.koolearn.com/upload/papers/20140823/20140823212341929324.png,-2)∪[http://picflow.koolearn.com/upload/papers/20140823/20140823212341898383.pnghttp://picflow.koolearn.com/upload/papers/20140823/20140823212342101335.png)

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