| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎& M6 ^6 Y1 ]9 N4 B. Z: n" y- B
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(x - a) = x - a
% T! o, }' r' y8 W1 `. e(x - a) (x - b) = x^2 – ax – bx + ab3 Y, W, U+ f3 Z2 ]; s
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc2 c: |. L$ V6 i" D. u& T+ L
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 j5 V" O. K. c0 {! a' V# I
如此種推，
" o$ T  i: A0 z% J" f# J" c% c. b(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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6 T: u1 |3 E; [[ 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/ I8 X4 M$ y6 b7 q

Originally posted by Triangel at 2007-4-18 01:26 PM:1 |; `* O$ A! R: g9 L5 Q. y3 H
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc0 d9 ^0 _" O# K  \$ r

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1 O2 f- I  z% i5 u1 t1 ^[ 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:" W. ~3 j* X4 B0 _
咁難既=.=") W  P1 V3 ]7 Q1 b4 C& C1 [/ J. c
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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:. R* Q4 U' [/ O& t
第一個答中有獎
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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:  S/ ?# O) S' t# F

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
$ u: C4 w3 N) c似IQ題=.=
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% U( m1 X7 t: ^7 M: \[ 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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(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4 b; A+ `9 L; I  A8 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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! C6 f: ~3 K; V% Y[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]