3 , 6 , 12 , 24 , 48 , ...
找出general term 條式!!同解釋返點解!!
最好用中文解釋!!
G E
2 , 4 , 6 , 8 , 10 , ...
The general term = 2n
general term通項
2008-10-07 10:47 am
回答 (1)
2008-10-07 2:56 pm
✔ 最佳答案
1st term = 3 = 3 x 1 = 3 x 2^02nd term = 6 = 3 x 2^1
3rd term =12 = 3 x 2 x 2 = 3 x 2^2
4th term = 24 = 3 x 2 x 2 x 2 = 3 x 2^3
5th term = 48 = 3 x 2 x 2 x 2 x 2 = 3 x 2^4.
So general term, the nth term = 3 x 2^(n-1).
收錄日期: 2021-04-25 22:36:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081007000051KK00255