| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 }6 ^7 u/ h2 `, ~4 Y6 d, w

$ N9 m; `% N4 L+ m4 K' k% \; x: r9 v(x - a) = x - a' l% I% ?1 Z1 I4 M& k: V
(x - a) (x - b) = x^2 – ax – bx + ab
( R$ N6 Y( Y1 b4 s8 U8 B/ C: e(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 r: ]9 b8 B# l6 J
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 |/ H; j+ z6 W3 x
如此種推，
- p' w) s* K+ J" P# D4 M2 w0 ?(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???" c# I+ [4 X- Q7 R+ F/ s
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
! S3 m4 W: a# N6 J+ |0 M! h(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:
" P1 Q, w- a1 x1 I# H咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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) p; v/ ^" |4 b9 F+ _Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:2 z' g4 \6 A$ A" l; x7 O
第一個答中有獎
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2 A4 f0 H& I. B- x(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:
  u, K8 l5 Y6 ?% \7 r
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& y4 L: m/ n% r% w(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題% M8 b8 D# h0 q8 n0 K+ N( u
似IQ題=.=! P! R/ h+ X; v, g

7 z# ^4 u' I: o( C+ 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:
& A2 K0 z7 c1 H  \- g# d1 v' p$ \( }2 D

% s( W' o  g1 r( d  a5 ]% Z/ R* h(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
8 Y1 @% _# b) `# o0 y: h7 m" i) B$ C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.........! K, ?( H) U% V5 P
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]