| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎. g# o- S; y5 }( K+ W

; ]  S" u1 e) R2 d% R. u3 p(x - a) = x - a0 @( U0 V/ b* r/ y, s
(x - a) (x - b) = x^2 – ax – bx + ab
! _9 E, n6 O/ A(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 u3 D9 l. k# i- z& u
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; o' z5 c' @+ t9 B2 V+ l
如此種推，
6 _' N: a' U. B7 w( C- _(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???$ S+ s2 ~2 |, m+ z" {
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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:# j2 S* n! @* t+ D0 e  r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc+ F! K4 H9 I+ s. [% X& {

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: ^4 \' o5 t/ l3 V; T[ 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:3 S! E1 g. j- [: `
咁難既=.="
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3 E" @) g' L8 @4 r% x. L[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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2 E+ C" O. [4 |) `# W1 GThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ U, f- g) C2 G9 b+ v* {3 r5 C第一個答中有獎
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- p1 l: j* |: f! v0 K$ y(x - ...

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' O- |7 ^2 B: N4 |0 M(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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3 O5 y; S' `( X( p1 x/ i(x-x)= 0 ，所以答案係0，is it?

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- P; D, K3 N0 i1 d# y: v# D唔似a.math題
! u$ N% T- Z7 v7 H8 A8 E似IQ題=.=  {& p9 ?# k6 U1 z! G

/ E2 v  e% i9 v: \1 `1 t[ 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:6 _" w/ ^3 u4 V& X

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(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
/ n" Q9 _5 w: o* ~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 U, R, M' r; N0 X; B$ A9 l
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這條問題，貼落吹水版，名副其實
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0 f9 q; K' v0 `# B[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]