1/6+1/12+1/20+1/30+……+1/9900

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/22 11:12:26
1/6+1/12+1/20+1/30+……+1/99001/6+1/12+1/20+1/30+……+1/99001/6+1/12+1/20+1/30+……+1/99001/6+1/12+1/20+1/

1/6+1/12+1/20+1/30+……+1/9900
1/6+1/12+1/20+1/30+……+1/9900

1/6+1/12+1/20+1/30+……+1/9900
1/6+1/12+1/20+1/30+……+1/9900
=1/2*3+1/3*4+1/4*5+1/5*6+……+1/99*100
=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6++……+1/99-1/100
=1/2-1/100
=49/100