| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a; Y: f$ E  g: E6 X$ N8 n# d
(x - a) (x - b) = x^2 – ax – bx + ab
- f! `% Z/ B* P' x7 G- E& w; r(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc. n, T% U& {- m( o! w$ t2 J
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& t) o1 u0 c! u: \: [9 q2 {6 Y
如此種推，' I; {) i' k7 Z  j, ~
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& a( l, }' L+ N3 Y3 e* P

' o; M2 W0 f  z  \7 K[ 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:% C4 q- n' ]( }- v
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc# D% n; o. l4 ^# e! E3 k

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' F( }, T1 u1 a8 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:5 ^7 v4 }* S9 N! Q+ h
咁難既=.="9 J: W% i5 q1 u; M  Z8 \( s

( f0 x' Q9 @+ s6 _[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
( L# V5 u6 c+ g$ @8 M8 H第一個答中有獎
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; K8 T$ U2 b+ E/ |7 q6 O! G(x - ...

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/ c4 d& N, k3 K/ T7 R9 _& @(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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$ p' y: N1 `( M7 l: d* ?(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題. |2 p8 V- ?% `0 G" v
似IQ題=.=
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[ 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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4 T' q5 \! ]# F) C) V! c(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
5 s0 Z2 [3 a5 o: T& s3 @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 O- u( R. _. |" o  d' L. p+ C
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這條問題，貼落吹水版，名副其實
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: r. M- w. Y# |3 i7 A2 i* n[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]