| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a; v- h6 b% j% ~7 m
(x - a) (x - b) = x^2 – ax – bx + ab
$ X2 r, c& [) I7 y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 i, X5 t  \4 u(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
0 d4 @: H* X5 Q4 f如此種推，' q- @+ T3 V( e' n
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ T. _; W' p& T  T1 ?/ t

1 C/ I8 \, y& }* b! ][ 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 ?+ v6 M

Originally posted by Triangel at 2007-4-18 01:26 PM:5 t3 G+ I$ {' T3 O
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc4 Q; P7 o8 F5 s' _& a  C+ j

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+ @3 Z2 Q# y; N[ 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:1 ~% z2 `/ `2 ], E/ V% t' A
咁難既=.="
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$ y- Q0 N, i# I  I[ 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:
6 k% u! a, ]: D# Q第一個答中有獎4 f3 Z/ P( K" d0 ]

$ J1 I5 p/ J7 c* i(x - ...

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2 ~* h) D) g* q" h( `& _(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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& e3 l# T: C7 V  A8 J1 ~. r( ^(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題4 |! r2 U0 F2 `/ j( F0 o* }1 P
似IQ題=.=1 d7 c4 l+ b1 V$ C  S  h* h
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[ 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:
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! _( Y8 J8 k) p(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
+ U! o# s/ L& J# 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.........2 Y+ M7 j. r6 W6 c

% u' j2 `( G( g4 _5 \! `這條問題，貼落吹水版，名副其實
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$ F& T5 f1 I- y8 u% L[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]