| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 w0 g( i8 A, |5 I8 F
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(x - a) = x - a5 o+ I" `0 j# H
(x - a) (x - b) = x^2 – ax – bx + ab  \5 m9 J4 R( J0 |. y3 m
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
; N- O9 ]* B8 {0 K7 `) r7 G(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd+ F# R" q* z/ Z" s% w* \$ a8 e( F6 N' v
如此種推，+ j+ n0 C- [- H/ {: x# _
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???$ ?! k6 |. }4 i! F; u
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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:
. R: P$ |, S: m' A8 a: B(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc& B8 h" T  Z# ?( R4 |. H0 y! I- J

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+ U7 F! i' h, K; g- f5 g4 ?[ 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:
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[ 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:9 t" m' N. s  {+ O
第一個答中有獎
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(x - ...

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4 H- M- C( ~% g(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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2 ]! u% T0 d: i3 [& S* r(x-x)= 0 ，所以答案係0，is it?

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! j/ Y3 U, ], g1 U! {唔似a.math題( h; ]/ I; l# K/ V9 m# p, a! H3 h
似IQ題=.=6 g+ j5 U- f  K! L& K" ~

; l6 \4 S. }% p, ?, Q[ 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 ?7 T! `' |  n2 G$ \
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2 x. m( U3 u2 U6 l, O! [% R(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  @& o( Q0 Q9 b0 ?
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! {( f  P0 d! e% K
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]