|1/2-1|+|1/3-1/2|+|1/4-1/3|+……+|1/2013-1/2012|

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/01 02:43:58

|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