2/(14)+2/(47)+2/(710)+2/(1013)+2/(1316)+2/(1619)=?

来源：学生作业帮助网编辑：作业帮时间：2024/11/06 10:02:12

2/(1*4)+2/(4*7)+2/(7*10)+2/(10*13)+2/(13*16)+2/(16*19)=?
2/(1*4)+2/(4*7)+2/(7*10)+2/(10*13)+2/(13*16)+2/(16*19)=?

2/(1*4)+2/(4*7)+2/(7*10)+2/(10*13)+2/(13*16)+2/(16*19)=?
不是可以直接算出来吗?