| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎; [8 H/ Y7 k5 I5 C+ t% ]1 V

+ i/ U' i: v3 q( F- ^5 e(x - a) = x - a
& S9 l7 X, A: a) D(x - a) (x - b) = x^2 – ax – bx + ab
2 `) F% K; W/ e7 z1 H' K9 o( W$ J(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc* w; K  P3 s/ O- p1 S3 K
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* A6 P8 f; N  f/ i
如此種推，
$ p- `4 ~; ^% i  v, M3 |(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???- `+ q/ p$ e+ P

$ f5 E9 v: P+ D8 G, L  Y, ?% C9 v[ 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:
- U5 w+ P) D7 U! z* \% l9 ~7 G(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc( S2 G, p" A+ Q6 M! R
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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:
5 i# e. k& T2 l+ X5 i; g% w咁難既=.="4 Q2 K& c0 t& W0 _0 e. `7 x$ f

% ?) I0 ~* g* i! p8 Y- d[ 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:5 E' |) D6 ?4 o4 A7 I% x7 ]
第一個答中有獎
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; |- X6 }: x3 B, ?, W6 V(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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' N% Q! ~4 z# [, r$ P# K3 e0 [0 e唔似a.math題
) E, l+ v, G9 g$ m0 O% Z似IQ題=.=
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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:
" V2 c5 L. {4 _( k% d1 ]2 _3 U! g6 @) _  ^/ B2 u4 x/ G
  a3 g& h* I, P& j
(x-x)= 0 ，所以答案係0，is it?

5 F  v: N4 N6 b6 [6 o
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waikong

我係學校個學生會單張見過& A' ^( _# {9 M! i% d$ W
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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1 f' T7 Y; Q7 E( N這條問題，貼落吹水版，名副其實3 j; m! m+ h- C/ I1 o$ ^; i
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]