| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎7 U( z! ?6 M  Y9 U: L8 l; q

& c0 v; V! t; L) a$ C, Z, r6 h. b(x - a) = x - a, ~0 c& u& A7 w7 v4 t
(x - a) (x - b) = x^2 – ax – bx + ab
6 Q& r+ ^9 o% c% i2 n4 O(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
$ L) j# e% v# J(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd( N2 F8 L% {4 o* ]1 ~% P/ e
如此種推，
$ v6 u- E. t; W) e(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???* [/ ]) d, S: ^0 h- Y* R
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[ 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
6 O- u5 U3 T# z, m0 H

Originally posted by Triangel at 2007-4-18 01:26 PM:
; ?) r- x1 g+ W" T(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc8 _/ o0 c% B3 Z
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7 f( z" y# H; c7 D$ K) o$ i. m[ 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:
6 F/ m5 G- v) B3 A! e  B咁難既=.="6 ~' G  c2 o- `8 x- Y

; I1 H1 P8 W0 @) X[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

3 @- B$ K- m0 S" v2 R5 `# U

! u: [, k8 U. ]0 q- |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:' H2 Y8 @& ?% z2 ]( A
第一個答中有獎
7 g- z  T( `! h/ i; W4 [
3 p4 N1 |7 A1 X(x - ...

( V& \" x8 @6 b$ @
% D1 y/ d8 k' D2 N: }(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
1 \, A. C* g: Y& I- @7 n- X; J4 [

' d5 H1 t7 V" q" W3 q6 Z5 \(x-x)= 0 ，所以答案係0，is it?

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$ x$ k8 G5 G1 K, l9 H
9 A7 ~* ~2 w9 y' U2 g唔似a.math題$ ~" j3 Z4 Y9 n1 T
似IQ題=.=
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1 |5 Q0 Z# k; i) S+ X7 d( _[ 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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& V# ^. v8 x! [* @. {  E" @4 O( P+ ~4 T9 P7 h( ~
(x-x)= 0 ，所以答案係0，is it?

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( @( K' N% J- k9 fBingo~

waikong

我係學校個學生會單張見過6 I* G2 f. I3 b' D
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.........* W- H5 h: i& J! ~

/ ^) ?0 j6 W9 m! J+ G這條問題，貼落吹水版，名副其實
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+ O3 P: E# b# w5 q4 {[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]