|
        
- 帖子
- 24445
- 精華
- 3
- 威望
- 10006
- 魅力
- 459
- 讚好
- 0
- 性別
- 女
|
1#
發表於 2007-4-18 01:26 PM
| 只看該作者
| TriTri | A-Math 加分題 |
第一個答中有獎
8 L" w' q. S& x
4 S, l2 ]& X0 D(x - a) = x - a
! i2 w: P9 R, y; k# D(x - a) (x - b) = x^2 – ax – bx + ab8 _ d3 D0 F" p( B& @' B2 e
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ r* z- _& W% w, }(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! F( @6 X1 E: e, [, R% m$ [3 n/ k7 ]
如此種推,
" B! W0 }0 ]4 a# [(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
1 T$ U# p q/ U8 y7 X
4 w5 g7 ^2 }& ~; y[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
|