| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, Z6 P  O/ m- y' v
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(x - a) = x - a
: [0 l# G/ R) L% y, P: P(x - a) (x - b) = x^2 – ax – bx + ab/ S; |+ M$ b, ^
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
' J+ f7 d# m6 o" @(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd) u1 h! y/ f% S0 Q* b; o4 h4 s
如此種推，
; \- c2 i) p6 \(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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# g8 n& |& T" B[ 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2 T7 Y% m5 z, N- N, K8 U  u

Originally posted by Triangel at 2007-4-18 01:26 PM:, D1 P, W% w7 C2 s1 o
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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4 k/ T2 g# _& L8 ]$ f* o5 D1 @[ 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:
& L- x* h8 p9 G/ j5 Y: l+ e咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 }) O% l8 k7 \; KThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
% B8 ]+ U6 t+ S* i9 @" K( p第一個答中有獎. l3 j9 @% ]2 }4 E6 S) \7 d
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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:; m( U( P; w) V

  m& T% p; m% H$ m9 H/ b$ p  N. \1 s8 r  o6 T: ]1 u) M
(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題# \4 L9 ]) Z% i! Y, P5 w3 _
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:: ^2 j, |: _; y: Y8 G! f

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  U4 w6 O5 f6 d" r/ F(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9 a( b) `5 v- L# R0 o+ P( ~
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+ n5 D8 H; b. {( ]* f

3 `) X, G" C% P4 @' n  M1 U) Z9 F( S; f[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]