关于裂项相消法的公式,1⼀[n(n+1)]=(1⼀n)- [1⼀(n+1)]是怎么求来的

2025-01-24 08:31:37
推荐回答(1个)
回答1:

1/[n(n+1)] = (n+1 - n)/[n(n+1)]
= (n+1)/[n(n+1)] - n/[n(n+1)]
= 1/n - 1/(n+1)