观察A1=1-1⼀3,A2=1⼀2-1⼀4,A3=1⼀3-1⼀5,A4=1⼀4-1⼀6……则An=??(n=1,2,3,…………)

2024-12-28 14:09:52
推荐回答(1个)
回答1:

A1=1-1/3
A2=1/2-1/4
A3=1/3-1/5
A4=1/4-1/6
A5=1/5-1/7
......
An=1/n-1/(n+2)