| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎: ^. E( T7 E, q- c
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(x - a) = x - a0 A% e3 s) O+ X8 g
(x - a) (x - b) = x^2 – ax – bx + ab
; L' _4 d$ F9 z4 E(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
! o* t6 }. C$ ~0 p+ A0 O, j(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
4 s, ?8 b  S5 w如此種推，
$ c  C7 G: W5 y) `(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???% Q0 c( C) f6 D( j( L

2 [$ Z1 x( v! q( ~[ 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+ V& `* k6 ?1 ?6 t8 ]4 r0 {

Originally posted by Triangel at 2007-4-18 01:26 PM:/ ^0 J* k4 ]" S) h9 C. |& K4 H
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc% T7 x' w7 ^# z3 E6 w

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[ 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 h3 y, }9 j( Y0 b9 N; X( t咁難既=.="
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+ j8 r6 t8 F% Z[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
, s! W7 A) t" u- g1 Y& f第一個答中有獎
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. q1 j  Q8 m) E, n" w(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:: T2 h7 |* x& c* p) f: x

7 E* @1 ^; Z: a+ R% \& Z  s' q$ E0 v8 Q4 h! ~8 z- k3 e( C- {. M
(x-x)= 0 ，所以答案係0，is it?

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6 h" h) V- H4 s( j# T唔似a.math題( w3 }* v; C! k" d# S/ X+ K
似IQ題=.=# s  ~) p+ P  L( `

. r9 `' e% ^& I[ 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:4 }% Q+ B# S. d) X. D
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& z$ a" d% O2 s' i* E4 e(x-x)= 0 ，所以答案係0，is it?

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/ |& ]1 v6 Z" @Bingo~

waikong

我係學校個學生會單張見過
0 u' N& x# `  [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.........6 ^7 ~: `9 N0 V% C

% J* t0 p: g# S$ E這條問題，貼落吹水版，名副其實
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0 v% j0 @! b+ v/ D$ W[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]