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函数y=log http://picflow.koolearn.com/upload/2012-11/06/628f9b6a-d213-4fd4-9576-5d971aebbe7e/paper.files/image001.png(x 2-6x+17)的值域是

发布时间:2021-08-03

A.R

B.[8,+http://picflow.koolearn.com/upload/2012-11/06/628f9b6a-d213-4fd4-9576-5d971aebbe7e/paper.files/image002.png

C.(-∞,-http://picflow.koolearn.com/upload/2012-11/06/628f9b6a-d213-4fd4-9576-5d971aebbe7e/paper.files/image003.png

D.[-3,+∞)

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