| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎% Y3 ?/ d6 U9 ^. s# ~
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(x - a) = x - a8 _2 S# `! f# m3 k1 j8 N
(x - a) (x - b) = x^2 – ax – bx + ab( J9 g8 w) R0 v5 e' P
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc: o9 h( z5 x4 M' x
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
8 O4 ]2 r8 y* O/ Y. j  [  n如此種推，
2 p* q# j, K- ~+ p8 `- K# C; x/ g(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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, |; T# J  ]6 Z- B' {* ?) `[ 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; G4 ~3 k. U7 w( O' n

Originally posted by Triangel at 2007-4-18 01:26 PM:
2 s- E5 c# z& K! i- D8 \3 q$ R(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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* G8 O( Q  @. a& Q[ 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:
7 A- l6 Z; N! Z, x& k; G# y咁難既=.="
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, ]8 B2 R& [# u9 R$ g[ 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:) ~: O0 w2 B& w$ ~4 H
第一個答中有獎0 Z1 X3 i3 X+ F2 U  Y; ?& U
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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:4 B! f& }$ X  |1 _4 Y
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0 x. T+ O. U' k$ E6 {(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題3 I5 r0 i6 L. ?% p
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:' ^% L" F8 E& ]: |3 C) F

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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  s  w: ?+ J9 F2 D* {
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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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]