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答: y=(x+2)/(2x+1)對吧? y=(x+2)/(2x+1) =(1/2)(2x+1+3)/(2x+1) =(3/2)/(2x+1)+1/2 所以: y-1/2=(3/4)/(x+1/2) 所以:上述函數可以通過反比例函數y=(3/4)/x 向左平移1/2個組織再向上平移1/2個組織得到
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