请教一道有关数列方面的题!
1个回答
2011-04-04
展开全部
A1 = 1
A2 = 4-1 =3
A3 = 8-3 = 5
A4 = 12 - 5 = 7
...
AN = 2N-1
SN = (1+N)*N -N = N^2
A2 = 4-1 =3
A3 = 8-3 = 5
A4 = 12 - 5 = 7
...
AN = 2N-1
SN = (1+N)*N -N = N^2
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询