| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎' z! V8 `( n$ a2 ?

7 c* x4 Y" m$ {8 V* \(x - a) = x - a* |/ O" ]. k8 p3 M
(x - a) (x - b) = x^2 – ax – bx + ab
. u5 L) @+ i% _. W5 [(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 }4 ], x; y+ @: F0 v! _(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd- O9 d% ^2 q. C# F1 C+ _2 i# o
如此種推，
9 t0 r3 l0 d/ E* u$ {- g(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ D; O' J5 u& O- r

  l# s! ?2 J4 S) _[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題
# n5 q- @" i. a& H3 e

Originally posted by Triangel at 2007-4-18 01:26 PM:$ f" L7 e4 \; O" |
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
+ X0 Y3 Q2 B* J) [
' j# ?6 h* C; _+ M( G7 N8 i

2 T% e4 G: Q- r4 v: C6 i3 g" Z9 d, c1 l0 T. R3 d# X9 H. k  l8 N
[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:
4 W3 x* B3 K" v9 V咁難既=.="
. O9 i) o6 N; l; d6 w/ }1 J. O, A1 B. H5 L0 c& P* }* F
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

" O9 I, a- i! B9 _! V

: t3 P: y1 p" J3 D* i. zThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:" D( P5 l0 H8 B- w* \, Z
第一個答中有獎. C3 @- [0 E' B4 a) F0 f
5 t( q8 ]# S: I7 N; W
(x - ...

" W( X  Z0 u" y- i2 X1 P: m% n7 d7 w1 J
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:. n9 \; y  B+ L1 p( \+ c

5 R' `9 u% S- i% e" Y8 V) P. w; F2 ^+ c3 L+ S
(x-x)= 0 ，所以答案係0，is it?

4 `# P2 W) S3 l5 g. X: X( Z7 N7 N: b& t# t
$ V+ b' Z1 b8 m' E9 O) ?; H( T. B& D
唔似a.math題. a' @* J2 e- e
似IQ題=.=
3 |. {/ B, _: c8 q3 g# X- v
% @# P$ h2 C' s" d. Q[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:& e& M& `% d1 ^! F( W% Q- w

8 b) m8 ]: _8 e4 Q- H
. S: x' N+ n& k. s  J' N+ {(x-x)= 0 ，所以答案係0，is it?

4 u4 e7 f7 \0 F9 }* N2 b
0 l/ y# _8 C- |
Bingo~

waikong

我係學校個學生會單張見過1 D( R; g) E2 _
諗左一陣先諗到

playbr2

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

karen0123

(哭)~~~~~其實我都知係0.........
  w$ T( w$ U$ `4 q) c2 Z- [' R- W3 p% w7 U
這條問題，貼落吹水版，名副其實
5 n1 S- c+ J" ?6 D% i3 S' i0 Q3 S. x& d
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]