| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a  Q) F: i) y4 Z
(x - a) (x - b) = x^2 – ax – bx + ab6 |) u: m0 G% |
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
7 B- h1 @& T7 g! t3 B% a+ r: L: D(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& R% i/ `2 r  {  r/ l+ ^
如此種推，
6 O5 [2 K- m% U(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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:7 [% `8 t) ~) O$ t9 M0 _
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- F% K& N. W4 k2 L# 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:
( }2 }% _% D* {) E* M" ?咁難既=.="% Y& @' s4 W' q2 X

# w- C$ v# @4 k) k% Q[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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" `- e( t' \. a2 @4 K2 `2 J3 e6 d0 rThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
4 N+ ~- A7 p8 n6 S' f第一個答中有獎$ c4 ]& N8 B- W/ _" O

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3 z  R! t9 a+ O' j8 @(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:( [6 R) T2 m# o6 {
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(x-x)= 0 ，所以答案係0，is it?

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/ c  p2 n( Y' s$ K( v. D. S唔似a.math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:
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& s  g; h; W. _# d7 @' b8 C(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
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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.........; y, Z9 h5 Z' R! K0 C

# n, Y6 l- j  E: t7 n9 J/ s這條問題，貼落吹水版，名副其實  S! A0 }# t$ `# m: ^- G+ a3 Z+ x+ C
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]