问题描述: 如果|ab-2|+(1-b))^2=0,求1/ab+1/(a+1)(b+1)+.+1/(a+2007)(b+2007) 1个回答 分类:数学 2014-10-06 问题解答: 我来补答 |ab-2|+(1-b))^2=0ab - 2 = 01 - b = 0a = 2b = 1代入:1/ab+1/(a+1)(b+1)+.+1/(a+2007)(b+2007)= 1/(1*2) +1/(2*3)+1/(3*4)+...+1/(2008*2009)= 1- 1/2009=2008/2009 展开全文阅读