计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29|

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/18 06:24:48
计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29|
x){nuӭj uA6mbB QglY$铯YΆBAjl ـ9 &h5҆j K]``z\3$:7P

计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29|
计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29|

计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29|
1/21

=1/20-1/21+1/21-1/22+1/22-1/23+......+1/29-1/30
=1/20-1/30
=1/60