求解此题?

2020-07-27 00:02

问题补充:
T9EtxYkY
0 0

裂项原式=1-1/100=99/1001/(1×2)=1-1/21/(2×3)=1/2-1/3..............

hoZZwVhZ
0 0

裂项原式=1-1/100=99/1001/(1×2)=1-1/21/(2×3)=1/2-1/3..............

sv4e1QVm
0 0