|
        
- 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
+ B: \& K! Z/ C, x3 [3 t, P9 ?2 C
9 Z9 |1 ~ l% w2 h(x - a) = x - a& A( j. j; X* Z+ v; a& V! K6 H6 D1 B8 P/ Z
(x - a) (x - b) = x^2 – ax – bx + ab$ `' \+ q& ?2 ?! e& v# P3 V6 M
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc6 h+ W M: @& {
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ p. i4 D" {6 S+ ?) H3 d, ?
如此種推,
) E# T/ k5 w- `( N; T* O) l(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 ~* s7 `4 Q6 h, Z; `) h7 |4 H
% \) g- `, }7 Z( l8 j
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
|