求general term
回答 (2)
2008-01-10 6:44 am
✔ 最佳答案
點解冇"，" =w= 你將佢變左條算式...
你係想打1, - 1/3, + 1/5 ,- 1/7 ,+ 1/9 ,- 1/11 ,+ 1/13 ... ??
If yes, here is the answer.
An:
(-1)^n+1/2n-1
2008-01-10 14:18:38 補充：
留左括號...用電腦打好麻煩= =(-1)^(n 1)/(2n-1)
2008-01-10 7:20 am
should be (-1)^{n+1) / (2n - 1)
收錄日期: 2021-04-14 18:24:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080109000051KK04374