算式简算
来源：学生作业帮助网 编辑：六六作业网 时间：2024/10/06 20:15:53
算式简算算式简算算式简算=1-1/2+1/2-1/3+1/3-1/4+……+1/19-1/20=1-1/20=19/20=1/1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+……+1/18
算式简算
算式简算
算式简算
=1-1/2+1/2-1/3+1/3-1/4+……+1/19-1/20
=1-1/20
=19/20
=1/1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+……+1/18-1/19+1/19-1/20
=1/1-1/20
=19/20
=1-1/2+1/2-1/3+1/3-1/4+……+1/19-1/20
=1-1/20
=19/20