问题描述: 若b+1/c=1,c+1/a=1,求(ab+1)/b的值 1个回答 分类:数学 2014-11-16 问题解答: 我来补答 c+1/a=1 c=1-1/a=(a-1)/a 代入b+1/c=1 b+1/[(a-1)/a]=1 b+a/(a-1)=1 b=1-a/(a-1)=(a-1-a)/(a-1)=-1/(a-1) 代入(ab+1)/b =ab/b+1/b =a+1/b =a+1/[-1/(a-1)] =a-(a-1) =a-a+1 =1 展开全文阅读