1/321+1/432+1/5+4+3.1/(2013)(2012)(2011)

题目详情

1/3*2*1+1/4*3*2+1/5+4+3.1/(2013)(2012)(2011)

▼优质解答

答案和解析

=1/2*(1/1*2-1/2*3+1/2*3-1/3*4+1/3*4-1/4*5+……+1/2011*2012-1/2012*2013)
=1/2*(1/1*2-1/2012*2013)
=2025077/8100312

看了 1/3*2*1+1/4*3*...的网友还看了以下：