| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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; d1 ]$ |( t5 @# A- G(x - a) = x - a
3 G" a) E- c# b4 C; J1 H. h(x - a) (x - b) = x^2 – ax – bx + ab
! ?) w! q+ l8 @6 w& r% E(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ T; f' C2 Y' o# |5 q$ n% Y, G
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
9 |8 Z  g9 O( l' k如此種推，# S5 G" I, }. I1 {4 V% e$ o7 D5 ]
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???" m. B, h* @- F) {* |

% u  m" d9 D- `6 I; j, X% j[ 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& H) [' B! v4 d1 q

Originally posted by Triangel at 2007-4-18 01:26 PM:0 e) z7 t; L" q6 A* C5 \  u
(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:- b5 {* s+ G) @# p/ W
咁難既=.="3 `, `8 e6 q% S& g4 ?* L5 R/ o; x
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& O; w3 ]& T. N! kThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 l' h# e- Q0 Y- c3 C第一個答中有獎' ^* d% l+ g& ~1 [4 j7 L, L/ m
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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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! D; ^3 m! l9 {0 B+ U% `- h(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題- `5 a+ D! J9 T2 P# e. m
似IQ題=.=
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& `  J- E4 U1 Q+ x: X: _/ P  [[ 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:& I& u) H/ Y; F( m0 B

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9 Q- Q1 l* c& F( h6 ?(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/ H1 e6 h, s; D' g( |+ j! n2 l
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.........: \, x" H2 j) [$ m4 n3 O3 d

. s" R  w8 ~( g& Q( t這條問題，貼落吹水版，名副其實8 X5 U; U/ E& ~! q  B
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]