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函數y=m-x/x-m-1的反函數的對稱中心為(-1,3), ∴函數y=m-x/x-m-1的對稱中心為(3,-1), 而函數y=m-x/x-m-1=-1-1/(x-m-1) 是由y=-1/x平移得到的, (1)m+1>0,是由y=-1/x向右平移m+1個組織,向下一個組織得到 (2)m+1
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