| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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* n7 x1 u( U& L0 Z(x - a) = x - a3 X9 K7 M+ m$ b
(x - a) (x - b) = x^2 – ax – bx + ab; J2 h3 D6 U" Y& B
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
/ C+ z% x) e4 o( w- ](x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; n# M9 _2 E, J4 \
如此種推，
; Y2 C1 D9 W0 c4 h9 r& t; q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???3 I. v3 \. o- w: e3 P% o% S3 a
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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4 _8 S( N1 K$ S+ L

Originally posted by Triangel at 2007-4-18 01:26 PM:& N/ y. W& P; I. d
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc" Q6 }* E' b4 Q, c. K

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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:' R% b; f+ @2 F; K: A
咁難既=.="2 w2 D5 R+ v4 b9 U) }2 l

; F9 m( U" m: ^# b+ p[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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) \  k5 X" c, i6 t! f& ^4 A; I; HThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 c/ A4 Z. A  u第一個答中有獎4 m9 I- ]/ X: {% W" q0 W" D7 l
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(x - ...

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5 p& i0 e/ ~  n6 p) E9 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:" u; l( o1 p: x/ l8 I0 e9 X$ S8 T

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題) B" Q# D) @* p' N4 Q+ j, x  Z2 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:
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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
. X* y6 {0 b" H/ W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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$ d3 p* e" M! _) ]5 y7 n  C這條問題，貼落吹水版，名副其實
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% X1 n8 b4 w! i! ?5 r[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]