| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
# O# ~$ a" c* m9 d% H(x - a) (x - b) = x^2 – ax – bx + ab) u3 \- S1 O. X
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc# q7 |, @* m9 {$ q6 e
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
# W6 W: e6 v# i如此種推，
. \2 w( [# P: N7 j: }: T+ |(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& u0 _. o+ F( l$ L' ?; H6 S( c

: }- q3 }5 i) V7 h( R4 k+ x[ 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:# `  E5 g* e7 ]/ g+ v
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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$ k, E' i! t5 I0 J: Z1 ^[ 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:1 Z. k, c" o5 {
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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) e3 k: e" r# b8 Y* g0 x9 |  hThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 ^1 \5 [4 a: T( t# O4 Y第一個答中有獎
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9 k5 W, H8 W. f: o, q/ A& r* D# Y(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 h! t  O7 w# y3 K5 R

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(x-x)= 0 ，所以答案係0，is it?

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- e% J0 _& W5 b; E8 T+ H唔似a.math題
4 `  ~+ E( `5 g似IQ題=.=( y! C8 a( R. Z9 Y7 `' w: V2 R

9 j7 O( s1 q6 [$ F2 ~3 W[ 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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2 O' R, }/ j( G+ p. g(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; y- r) [. C4 R
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 ]