解開: ｎ＾２－ｎ
＿＿＿＿＿＿＿
ｎ＾２－１
要步驟！！！
數學題(f.2)
2007-07-15 11:06 pm
回答 (3)
2007-07-15 11:10 pm
✔ 最佳答案
ｎ＾２－ｎ ＿＿＿＿＿＿＿
ｎ＾２－１
n(n-1)
=_________
(n+1)(n-1)
n
=____
n+1
2007-07-15 11:14 pm
n^2-n/n^2-1
=n(n-1)/(n+1)(n-1)
=n/n+1
=n(n-1)/(n+1)(n-1)
=n/n+1
2007-07-15 11:11 pm
ｎ＾２－ｎ
＿＿＿＿＿＿＿
ｎ＾２－１
= n(n-1) / (n-1)(n+1)
=n/(n+1)
:)
＿＿＿＿＿＿＿
ｎ＾２－１
= n(n-1) / (n-1)(n+1)
=n/(n+1)
:)
收錄日期: 2021-04-13 12:59:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070715000051KK02161