|ab-2|+|b-1|=0,
所以ab-2=0 b-1=0
a=2 b=1
1/ab +1/(a+1)(b+1) +1/(a+2)(b+2)+.+1/(a+2008)(b+2008)
=1/(1×2)+1/(2×3)+……+1/(2009×2010)
=1-1/2+1/2-1/3+……+1/2009-1/2010
=1-1/2010
=2009/2010
|ab-2|+|b-1|=0,
所以ab-2=0 b-1=0
a=2 b=1
1/ab +1/(a+1)(b+1) +1/(a+2)(b+2)+.+1/(a+2008)(b+2008)
=1/(1×2)+1/(2×3)+……+1/(2009×2010)
=1-1/2+1/2-1/3+……+1/2009-1/2010
=1-1/2010
=2009/2010