| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎2 c  _" X$ {' x' n% w0 ^2 u8 P2 t/ M

9 q, S1 j4 z7 e  G6 V. d(x - a) = x - a
9 n5 x+ {0 x8 Q# K6 ~$ z(x - a) (x - b) = x^2 – ax – bx + ab3 o( U) a" [: T& b
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) o) u* r- [. |; s(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 K/ ~9 H+ K8 y! B
如此種推，9 W/ ^8 b" j! @/ L: z9 U
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???5 A( I( j3 U& T6 j; \: \  C" P
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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) E1 t+ u: q" w( {! ?

Originally posted by Triangel at 2007-4-18 01:26 PM:) F. X; N. T/ F! {: L3 @
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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[ 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:0 v; r; s" b# `  g
咁難既=.="# y7 k2 p9 e4 P* a) T( H
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& f9 M' v) B7 K) [. Q2 d8 mThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:5 z# ^6 T" x7 W& W2 r0 }7 H
第一個答中有獎
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(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:
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(x-x)= 0 ，所以答案係0，is it?

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  c) F) O1 _! ?# R, [9 W唔似a.math題4 b) u  O, a. i6 f5 O3 V
似IQ題=.=
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[ 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:8 S) d2 S1 H5 I9 ^
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(x-x)= 0 ，所以答案係0，is it?

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: c/ P( X  K  ]2 kBingo~

waikong

我係學校個學生會單張見過
% b" @6 \! {, K0 f7 s) a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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# X( L: V, d7 ]7 E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 ]