由|ab-2|+(1-b)*=0 ,可以解出a=2,b=1,这个题要求把各项拆开:
1/ab +1/(a+b)(b+1)+1/(a+2)(b+2)+...+1/(a+2008)(b+2008)
=1/(2*1)+1/(3*2)+1/(4*3)+……+1/(3000*2999)
=1/2+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)……+(1/2999-1/3000)
=1/2+1/2-1/3000
=2999/3000
由|ab-2|+(1-b)*=0 ,可以解出a=2,b=1,这个题要求把各项拆开:
1/ab +1/(a+b)(b+1)+1/(a+2)(b+2)+...+1/(a+2008)(b+2008)
=1/(2*1)+1/(3*2)+1/(4*3)+……+1/(3000*2999)
=1/2+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)……+(1/2999-1/3000)
=1/2+1/2-1/3000
=2999/3000