http://imageshack.us/photo/my-images/442/123wma.png/
prove this for all positive integer n. (in the easiest way)
plz ans in detail thanks
2012-09-01 2:20 am
回答 (1)
2012-09-01 6:25 pm
收錄日期: 2021-04-23 23:25:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120831000051KK00615