| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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) C+ W' X1 B2 I) Z' |- E(x - a) = x - a2 ~$ g; E8 H' D: E$ N& Q: G; x9 q
(x - a) (x - b) = x^2 – ax – bx + ab' ~+ Q0 ^% r& O/ v& \" l7 W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 d+ U! C& q" P5 l  p1 K- B  O
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 F! N/ n' E' d/ H* G8 q+ u
如此種推，
5 b. o% g% `% a0 O(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???, {1 U4 z' `+ ^0 v

& G" j5 a9 C% @) u+ L1 _% A[ 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8 m: z3 r! o8 H6 \/ \/ _) d) j

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 E& L. `: f& _1 U) f(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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) O0 l$ C. V! _3 f- t7 i) x- ^[ 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:
: X" q4 h2 i/ E, h7 }( I$ K. Q咁難既=.="  N% p$ J! W) a4 \! U

2 K5 W5 `/ w! m2 X% G- r  P4 a[ 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:& A$ |0 B# n. L6 _' c
第一個答中有獎3 G6 q# v! x, ~: d" L9 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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7 X# e5 Q+ Y# j1 i6 H1 T# Z0 f) Z( d
(x-x)= 0 ，所以答案係0，is it?

3 c# B$ k* m$ i6 a/ [
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4 e# [$ L% a3 q9 r; Q3 l. U$ F7 O唔似a.math題* I" K; I4 g' k+ v" T% o
似IQ題=.=, m/ {  }( s% N1 f1 j7 w: P4 }

1 ^( A& b/ V0 K! o$ [[ 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:  A% S0 T2 `, D! R! `0 U0 D7 g
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6 ], Q0 o% r/ O6 W  Z(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5 M3 P$ G6 _8 L/ X, ^  ~& L" |" B% r
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.........4 P/ C4 `2 H; }$ N4 K3 v3 B+ u
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這條問題，貼落吹水版，名副其實: r9 j( T. ?, a% L* s$ E2 \
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]