早教吧作业答案频道 -->数学-->
1/1x2+1/2x3+1/3x4+……+1/9x1o=1/1x2-1/2x3-1/3x4……-1/1x2+1/2x3+1/3x4+……+1/9x1o=1/1x2-1/2x3-1/3x4……-1/9x10=
题目详情
1/1x2+1/2x3+1/3x4+……+1/9x1o= 1/1x2-1/2x3-1/3x4……-
1/1x2+1/2x3+1/3x4+……+1/9x1o=
1/1x2-1/2x3-1/3x4……-1/9x10=
1/1x2+1/2x3+1/3x4+……+1/9x1o=
1/1x2-1/2x3-1/3x4……-1/9x10=
▼优质解答
答案和解析
=1-1/2+1/2-1/3+1/3-1/4+……+1/9-1/10
=1-1/10
=9/10
=1-1/10
=9/10
看了 1/1x2+1/2x3+1/...的网友还看了以下：