| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎& k: W2 }0 }2 [; q# w
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(x - a) = x - a
$ ?  a6 W0 h' ?, o  f(x - a) (x - b) = x^2 – ax – bx + ab' W- X( F( j* c, `0 t* O, S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc( U8 L  [- x" W
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* m. F  B6 z5 x& n# n! D
如此種推，
. I, m6 t7 P4 i, H& s0 U* g- N* ?(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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) R7 P2 Z% r4 B3 P7 R2 m4 |

Originally posted by Triangel at 2007-4-18 01:26 PM:/ M8 _- k# J$ M! w5 L2 y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* \( x. G, P: \/ a# C& ~: l4 _$ d

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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:" R1 r, q) y& T) j& @: }
咁難既=.="( j# Z: Q" G9 N5 d

( i: U' f6 W5 r. p[ 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:
8 R' q/ B$ j+ w# S# e% T7 u第一個答中有獎$ }5 A) Z. K; \6 o, J( Y

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5 D/ S/ `) s4 H! k& r  H! y% n(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:" O3 ^0 a( j( |2 x

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* O+ L" b; r- p0 Y( k: ~(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
6 o- r0 q( x6 j3 y) m* J似IQ題=.=0 [; \  x$ G7 u: v4 z

. v" F. O" c8 }. J* 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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(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' D9 r+ U. J: z) U
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.........5 h; \, J( v6 M+ D3 z
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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 ]