a※b=(a-b)/ab
=a/ab-b/ab
=1/b-1/a
所以原式=1-1/2+1/2-1/3+1/3-1/4+……+1/2013-1/2014
=1-1/2014
=2013/2014就是1/1-1/2不客气满意就采纳吧