|
        
- 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
5 P/ _2 `; z* C; b) T( R0 r6 C; Z- {) n& t& n
(x - a) = x - a
5 @) ]8 h" j" D( j9 N(x - a) (x - b) = x^2 – ax – bx + ab
* V" h ]8 V+ S _& I1 L. P(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
7 Q! L7 @9 v, Z* {" c(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
- Y6 @5 l, m4 L5 ]8 v如此種推,% g( i w! j$ s* r2 a/ v9 Z
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ z6 ^* B4 h, P( E1 l, {, B
+ r% [* O' |: u0 h$ g( u1 z
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
|