|
        
- 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3 }5 ]2 [5 x% @8 J6 @* o
1 S3 @ U$ g- e, V+ \2 Q2 E" S(x - a) = x - a
1 r7 g5 E: e% I! g(x - a) (x - b) = x^2 – ax – bx + ab! _1 c" @/ D9 F* S# p' T3 J
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
d7 e6 |/ m2 W+ J(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
3 T" }& q9 W: `; D" b如此種推,
8 b% L, L( D1 W, y9 n' o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
( l5 R" L& W$ X, Z$ I1 D. U9 R( L s p' K7 C5 q
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
|