| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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! O. l1 }. v% [(x - a) = x - a) _5 U! U5 o! d; S9 [, L
(x - a) (x - b) = x^2 – ax – bx + ab
! f- D; N  x3 c  E(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc  g# M, c: g4 R' {
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd( P5 F/ m; P9 R7 i& Q  x. \
如此種推，% I# J( U4 {) `" t: o3 s; [& M
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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: y4 E! @$ w0 U& k1 l# g& S9 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 m, g: q1 m- v! d1 e- m4 Y

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ f& N6 J9 S, |(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:7 P; v; L; L: R. E! [
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! k* a4 \6 [3 I. DThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:- ~6 Y# b9 k' S3 J& U& V% ~
第一個答中有獎) r* l: \4 N! T# L

0 b2 J+ G4 U9 U+ F7 B(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:
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! g. Q2 V9 s% k; z5 m- U+ N/ b. p9 [(x-x)= 0 ，所以答案係0，is it?

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: L& A. y8 N! O# c2 D唔似a.math題
( O& j9 c) W# E# J5 E& N# y- P似IQ題=.=1 `8 x6 a3 e( ^5 C, g  x+ o: ?
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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:4 w" e( k9 }6 R2 i% O6 t
; H2 J0 x2 [) |( a3 l) |

1 }5 `1 o4 r& N7 M) o  e, F; [& F6 d(x-x)= 0 ，所以答案係0，is it?

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. @% T1 D% C4 k! H7 LBingo~

waikong

我係學校個學生會單張見過
% V/ B5 |, k7 ^$ o& K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 f' r1 I# R9 z7 I3 [5 v

0 {' @  l& B+ _2 j這條問題，貼落吹水版，名副其實) Z. O# P& V0 V/ \* w4 j1 r2 H
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]