作业帮|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 22:54:03
|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|
|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|
|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|
|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|
=1-1/2+1/2-1/3+1/3-1/4+……+1/2012-1/2013
=1-1/2013
=2012/2013