eg.1,2,3,5,8,13,...
eg.3,6,12,24,...
eg.486,162,54,18,...
thank you
F.1(difficult sequences!!!)
2011-03-12 4:44 am
回答 (2)
2011-03-12 5:06 am
✔ 最佳答案
1 T(n) = T(n - 1) + T(n - 2)所以下一個數是 8 + 13 = 21。如此類推。
2 T(n) = 2T(n - 1)
所以下一個數是 48。如此類推。一般項是T(n) = 3*2^(n - 1)。
3 T(n) = T(n - 1)/3
所以下一個數是 6。如此類推。一般項是T(n) = 486/3^(n - 1)。
2011-03-12 6:54 am
1) 1,2,3,5,8,13,...
General term:
n^5/60 - (7/24)n^4 + 2n^3 - (149/24) n^2 + (569/60) n - 4
The next few terms are 24, 50, 107...
General term:
n^5/60 - (7/24)n^4 + 2n^3 - (149/24) n^2 + (569/60) n - 4
The next few terms are 24, 50, 107...
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110311000051KK01009