| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
  q2 o* p) R. S) j/ H; j) W. w(x - a) (x - b) = x^2 – ax – bx + ab
+ w6 e5 f4 ]# |6 `) |: e(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 q& v; [9 v. m" ]2 P(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd0 R$ f. n3 P9 h) d6 m
如此種推，
' w" e# k0 m# {1 H. E0 c(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???8 e9 r& K( u+ H
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[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
9 S, |% V* g6 m; W+ y1 Q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* P- z& w& I1 W4 f! r* m, M2 D
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  @$ h4 g4 \! W4 {! r0 U! O[ 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:& E! r2 `9 d* X; B' X( [
咁難既=.="  Z6 d7 Y  _, R! A) U

4 r, i5 W5 V; U& W2 K[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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( l* K/ I5 v3 ?! y: [3 vThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 G; k" x) v$ w第一個答中有獎
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:% O* H  I1 U- \" Y; O/ l: q0 [, ]+ h

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; m) L. s5 {& ]* t& Q0 K(x-x)= 0 ，所以答案係0，is it?

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$ P0 m+ d; F& G唔似a.math題/ b% K: P# ?- Z/ c5 U
似IQ題=.=
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+ X" e% `: v6 K. @1 p8 a: _[ 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:0 s% \* t0 R" w7 R  p( Z

2 ]2 Z0 T* E7 G, b6 j  x6 o. u* l5 ~6 @
(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過  O0 `1 s/ X- Q8 r# Q0 l
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.........
9 A* x$ E0 z7 a: }
7 V  j" r- E% d9 \$ n) V4 G這條問題，貼落吹水版，名副其實# v/ Q, q. [/ V5 m" u
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]