| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
; v4 [% _# F8 r9 M! P' I(x - a) (x - b) = x^2 – ax – bx + ab
" F3 ?& i  V. }; |  c, K& w(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc' C; r& ^, s- P3 d5 }  |: g8 e
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
, F2 S6 b1 n2 J如此種推，
& C/ A; u0 A- Q& h4 K. n1 f8 W( N(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 E5 P0 E6 F6 N; y& S( ^; e5 x' ]

( c! c: Y3 K6 C( ^: C; C[ 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( M: w' Q0 B) i1 Y' @* f

Originally posted by Triangel at 2007-4-18 01:26 PM:
% @+ d9 _7 F( w/ t+ e(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:/ m+ }9 [) y- N, ~
咁難既=.="% Y1 G$ c8 G; f3 x+ v; h6 j

9 {; U, k* _; M! T/ y* m[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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/ c7 p! I* T% ], Y. D: P' sThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:( u7 G4 N7 @9 Z$ T, y! u& ?
第一個答中有獎
/ n7 a, n/ j" d+ ~) U& M2 x! m
+ v( c! {; i- J+ [6 ]" f, q8 O9 l4 G( {- \(x - ...

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" d( c! m2 n: |. H! N! W; m(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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5 J4 u. h6 k4 J; X( T/ ?2 [1 h0 C唔似a.math題5 ^. R" Q( W! d/ w$ I! O
似IQ題=.=% F' ], q! \+ d

6 {& Y/ \$ M* L5 L! b0 \4 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:5 `) j* q; J, p( a2 G! S* H
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5 Q6 h# `- i8 M# P3 ]0 M(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. M  L0 o6 h" f. [# O* V8 g
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.........8 b. a1 t& C; v* {$ e: N2 Y

( c, c- Q; a" b5 T" D+ I0 S這條問題，貼落吹水版，名副其實2 \) v( C! s- S: `
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]