找规律2/3,5/8,10/15,17/24,26/35…那么第N个数是(N为正整数)?
问题描述:
找规律2/3,5/8,10/15,17/24,26/35…那么第N个数是(N为正整数)?
谢谢.
答
n^2+1 / (n+1)^2-1
找规律2/3,5/8,10/15,17/24,26/35…那么第N个数是(N为正整数)?
谢谢.
n^2+1 / (n+1)^2-1