| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎: R0 E/ w% A8 q) v% \% U
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(x - a) = x - a/ K; |% s9 m+ X1 D  H
(x - a) (x - b) = x^2 – ax – bx + ab# Z0 t$ ?  H9 ]# w8 \4 p
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 S4 {( A/ I4 ?  y" p(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 b' V& T$ u! G1 K
如此種推，/ w& V( A4 P% v- T2 C9 I( S
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-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:: s2 k9 z9 |+ J2 y8 q/ h: v
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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7 z( v" ^' R( g. m' a$ ~. R[ 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:" I$ M4 g% x6 T: `
咁難既=.="
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6 y9 t+ O: P4 @; r; J[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 C0 O8 c9 L2 {/ s$ C6 @Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
7 V/ H# k2 K7 Z" |" J& P- S1 E第一個答中有獎! |. g  y! O0 W9 M
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(x - ...

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4 O2 G( c2 @$ H$ `. N" y(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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, X8 b5 ?3 N/ |) P( o5 T(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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) [& o) _* A5 f  ^[ 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:/ G6 v; B3 R: S  w, Z7 e
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0 U+ V9 L6 X3 [8 D) O(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
( G2 S7 l3 N( @  L" F8 I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 t0 s2 i6 ^# o8 l& W% I6 V
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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 ]