| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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+ j9 U3 i" }+ S6 _7 ?( }(x - a) = x - a( T- Z0 q0 g& E- x& t0 f2 d/ M& K
(x - a) (x - b) = x^2 – ax – bx + ab
  Z! d7 k2 {: X(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
& M* u0 w7 h+ m6 Y0 M' m(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ E$ B& G$ a1 m+ U& \2 c
如此種推，
5 [. {/ s1 {6 Z( ^  d' c(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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6 s. I; a) u! P, ?5 @4 ^7 e6 t[ 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; d+ @8 u: M9 L: i3 M2 Z4 W

Originally posted by Triangel at 2007-4-18 01:26 PM:
" l& L6 l& i/ x7 _& X, y! f8 |(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc) }' A# F+ o0 C: n
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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:
  f- D+ G2 V9 S) W, x# B咁難既=.="# M& h" U4 m  y5 K! T5 I3 |, d2 j
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

6 O4 @9 V0 i# i0 H

6 N* E: @2 \* k" y& U/ N3 U5 ^Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
9 L0 X& K1 {& |- a' _- i( f第一個答中有獎/ q- b. d) V- J5 [
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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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(x-x)= 0 ，所以答案係0，is it?

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2 \( F( y- \$ n: i唔似a.math題0 f8 `: |, h  e  ?: C
似IQ題=.=; I5 D8 R. [3 E) C" [: H

% M0 Z: [4 [3 w& P6 z# Y[ 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:; C  Q  o/ c# S/ A+ k7 L
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# Q1 u; r" z( E+ T3 G(x-x)= 0 ，所以答案係0，is it?

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. E; ?  O9 ?5 N( j( q" j: ^" C+ y7 MBingo~

waikong

我係學校個學生會單張見過$ ~! I+ U: p; m. j  }
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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( I% E2 g8 j! `+ K) F6 @; C' a! F這條問題，貼落吹水版，名副其實" _9 o- Z1 ^2 V

" _; e; X  D/ O3 l! D[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]