| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎" l/ s# Q* y: \6 l! U
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(x - a) = x - a
' ]$ T# a' A! i1 Z1 P9 ?* ~(x - a) (x - b) = x^2 – ax – bx + ab! g' ^; [5 ?. `
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
, Y! Y  _1 T" b# K9 c3 d9 f(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd- I0 k# d1 b6 B' e# a8 m
如此種推，
( E8 I0 O8 A- n; s. j' _  i6 k8 q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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8 b* X! y, w( W/ G. Y[ 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, J1 a' V5 B* D6 S) S' |; e

Originally posted by Triangel at 2007-4-18 01:26 PM:
' T, r. z' Q+ ~$ W8 ?6 `7 _+ h* B(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc' |  x1 T: W1 B; g( C  S+ {

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/ C6 \' Y9 y! A9 e9 Y[ 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:
% s3 @  A7 ]9 y0 v2 [1 }7 ], t咁難既=.="
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( A* }# A0 E- U  D[ 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:* W9 F* |& K0 Z9 X
第一個答中有獎% B4 P- L5 m0 d5 K+ [
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(x - ...

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+ y* c, R2 |7 V1 [# R" h% h" ?(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:3 H6 K+ }# o$ K8 @9 c" U3 {
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( I8 i7 X2 `4 T. T1 _(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題8 \/ @$ h# v, K- D, b: C  G, }
似IQ題=.=7 p/ @8 M+ v4 _  {9 Z

$ ~: j8 H: x. B0 f5 z[ 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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9 q4 N3 R+ y. Y: y(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過
' e5 [& T/ |' o. N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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; v9 I" m( H+ r6 Q8 y0 q9 y這條問題，貼落吹水版，名副其實, C' Z9 ~2 a! X: U
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]