超難數學代數題

2008-05-12 1:06 am
請解答不列問題
1!=1
2!=2
3!=6
4!=24
5!=120
6!=720
7!=5040
8!=40320
9!=362880
!-?

回答 (2)

2008-05-12 1:21 am
✔ 最佳答案
by definition, n!=1x2x3x4x5...x(n)
1!=1
2!=1x2=2
3!=1x2x3=6
4!=1x2x3x4=24
5!=1x2x3x4x5=120
6!=1x2x3x4x5x6=720
7!=1x2x3x4x5x6x7=5040
8!=1x2x3x4x5x6x7x8=40320
9!=1x2x3x4x5x6x7x8x9=36288
2008-05-12 1:24 am
1!=1=1
2!=1x2=2
3!=1x2x3=6
4!=1x2x3x4=24
5!=1x2x3x4x5=120
6!=1x2x3x4x5x6=720
7!=1x2x3x4x5x6x7=5040

如此類推…
而"!"則是"fractorial"係一個數學符號唔係代數

代表"The product of all positive integers from 1 to n (where n is any integer)"

General formula: n!=n(n-1)(n-2)....3x2x1

最簡單ge方法係用計算機幫你計…
參考: Book:”New Trend Additional Mathematics”(volume 1)


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