關於數列的問題
Q:一條數列的第一項是1，第五項是16，那麼這數列的第二、三、四項會是什麼?
中一math
2009-07-31 2:48 am
回答 (3)
2009-07-31 6:40 am
✔ 最佳答案
It Is Geometric Sequence : 1st Term : 1
2nd Term : 2
3rd Term : 4
4th Term : 8
5th Term :16
The Formulae :
The Formula Of Arithmetic Sequence :
a+(n-1)d,Where a=1st Term,d=Difference,n=Which Terms
The Formula Of Geometric Sequence :
ar^n-1,Wherea=1st Term,r=Difference,n=Which Terms,
The Formula Of Triangular Number :
[n(n+1)]/2,Where n=Which Terms
The Formula Of Squar Number :
n^2,Where n=Which Terms
參考: F.1 Mathematics - Number And Number Pattern.
2009-07-31 3:09 am
等差數列？等比數列？
收錄日期: 2021-04-23 20:43:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090730000051KK01743