1/1x2+1/2x3+1/3x4+1/4x5...1/2001x2002 简便计算

分类: 作业答案 • 2023-01-18 09:26:48

问题描述：

答

1/1x2+1/2x3+1/3x4+1/4x5...1/2001x2002
=1-1/2+1/2-1/3+1/3-1/4+.+1/2001-1/2002
=1-1/2002
=2001/2002