| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 o( G6 ~0 Q* v# a" G
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(x - a) = x - a
. Q' T  d* m) b- t, A6 P(x - a) (x - b) = x^2 – ax – bx + ab# g7 T2 S* ^- v- R% r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 H0 j: O) t' [  F  P(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ z% a" o8 D5 _2 N0 [
如此種推，7 C3 r; c$ ^0 Z( V
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 {- L! b, j6 g" ^" h! ^

1 Y1 q4 ?0 s6 T/ q[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
" `* T  r4 `+ r: J" ](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:4 O" f: Q  e; C8 U' N
咁難既=.="
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! I" @6 w. h% L5 S  a0 ~[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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2 D7 x1 u4 z4 P; c; V2 m' e6 ^2 yThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:) G/ Y* W  N4 Y& D
第一個答中有獎
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+ \% A: a- m- {, x  ~9 \(x - ...

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9 p+ r1 r8 a% ~; a$ O) _(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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) Y4 |6 |' t$ E) A/ A% L& C(x-x)= 0 ，所以答案係0，is it?

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3 t2 t0 k# O' ?! b; U2 Q唔似a.math題
( g/ Z9 A! A& ^/ ^2 L1 d# o似IQ題=.=: T* n9 R& @4 M& z

# z& D/ G, w0 x9 r# r9 T* 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:
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(x-x)= 0 ，所以答案係0，is it?

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/ K6 j6 d8 [' d! v3 W( vBingo~

waikong

我係學校個學生會單張見過
. K: Y! K; I. h- a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.........) p( ^. ^' f, S& o0 C

$ p# a, p- A4 ^這條問題，貼落吹水版，名副其實2 }) Y: `7 Y/ D

8 {  K$ u- d1 j" Z5 l: k% }8 u5 s[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]