| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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. @$ o3 n7 l- O- ^' [(x - a) = x - a* G: b8 G: q2 b0 m0 ~0 G% y
(x - a) (x - b) = x^2 – ax – bx + ab
* w% f+ ^; K$ k: W4 ?  K2 y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
; J$ \% n# [0 X/ w, j0 t, b(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd+ Y* G7 t7 O4 A# W. m- j" B
如此種推，+ o7 X0 S; s+ B+ A. L
(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1 O! t( _: S: e- m! t4 M

Originally posted by Triangel at 2007-4-18 01:26 PM:9 Q- e0 W) Y5 I8 A; A
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc& B' z  n  d5 ~, h# t  G3 m6 g1 r

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% g7 B( ?; X6 p. j[ 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:- O! ^, E! Q- B4 d* {* W; U
咁難既=.="
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& G  P" {" Q$ a: b6 G[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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8 r4 W! F" c* Z; l) O- @0 Y/ h- ^Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
: _/ g4 ~( B( z$ L0 c第一個答中有獎4 s- D  W; b$ e# q/ q
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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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+ `8 e) _8 O% {! @, m(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題5 ?* W! R' z( }/ U4 f% U2 H! M9 B
似IQ題=.=+ u/ V0 x0 t. W6 |/ n( S7 l! x6 R

* N& r* G5 T% z  F& b[ 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:0 j; [9 w8 N7 b# S% m  W

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( [2 ~+ R" P0 c' z8 w(x-x)= 0 ，所以答案係0，is it?

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, F) `* l! U% q* v) Q% WBingo~

waikong

我係學校個學生會單張見過+ t& X- N3 N6 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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這條問題，貼落吹水版，名副其實
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0 q7 L1 ^% M4 v( q; B0 e[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]