作业帮当X=1,Y=2时,那么……1/xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2009)(y+2009)=_____
来源：学生作业帮助网 编辑：作业帮 时间：2024/12/02 19:23:11
x){wrNѳt^6-~Q2 2ԯ6ר6 4! #HS*f`` Ѷ `Tp465057
t!X!
$
$A]i ƞP
当X=1,Y=2时,那么……1/xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2009)(y+2009)=_____
当X=1,Y=2时,那么……
1/xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2009)(y+2009)=_____
当X=1,Y=2时,那么……1/xy+1/(x+1)(y+1)+1/(x+2)(y+2)+……+1/(x+2009)(y+2009)=_____
＝1+1/2-1/3+...+1/2010-1/2011
=1-1/2011
=2010/2011
0