| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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3 P0 c: B( @) b2 _(x - a) = x - a) O# E: h5 |! J" i
(x - a) (x - b) = x^2 – ax – bx + ab  r  s1 x8 |. B$ E3 Y3 m
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
4 ~' O) m( T, P' u' A(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
6 ^7 T5 [. p& W) i$ f- K; L如此種推，
% _; @7 @% s. [(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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" y$ r- q) t: v" A% P. D5 |6 y) N[ 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5 k( d9 u) \% K( S; P- D

Originally posted by Triangel at 2007-4-18 01:26 PM:
. Y2 ?2 W: K( e! {! h(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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. c8 I0 z* r% U& r[ 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:8 Z3 |% H6 s1 f7 z5 e* m: [
咁難既=.="9 L0 k8 m! v/ J
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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: H/ }; D+ ^: _3 b$ iThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:5 r1 c' R2 A5 m" V$ Z8 p
第一個答中有獎6 ?- b$ I$ w$ H$ q, Q: j, p" x

2 F+ a% r! Y7 e(x - ...

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2 m+ s  _6 r/ _: X0 P7 b# q(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
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2 v, T& D3 H4 K* a/ A' w# h: l(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題' u# M5 `- [% F% b7 ]/ x# n+ E3 }
似IQ題=.=8 |. Q" }( ~$ C( W, e

/ z; N& N6 ]: e1 w[ 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:
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(x-x)= 0 ，所以答案係0，is it?

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3 S4 e" {  E$ o* n# @Bingo~

waikong

我係學校個學生會單張見過. k8 f3 M+ k2 d# l. l' g
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.........
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這條問題，貼落吹水版，名副其實
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& {5 G0 G8 H! V' L, t; u+ H3 e[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]