| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ _+ Q! u' |1 c4 u& m1 K
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(x - a) = x - a, h1 E/ x5 _+ z: S) ?, c
(x - a) (x - b) = x^2 – ax – bx + ab
( W# N# ]9 T! ~0 M9 @- S3 F: K(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
! f9 A/ E+ W9 `- h! D0 I% p(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
; z  C" h1 }  j/ v' ~如此種推，
1 [8 m% ^: P( h! q% j* W(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???9 W( _7 K) v* l( h

- p8 a! P% @. q( n7 T[ 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:  ?; y+ B4 P/ R* V$ V) n' ~' W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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  b. v$ G' R# x7 s) a[ 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:
0 e1 Q- R" j' S4 H) n1 I9 c咁難既=.="# b2 q, h$ H: S* D! T3 p

; ]- m0 T9 w  l8 d[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 ~" S2 h6 g0 A: ?Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
0 s5 {1 U9 D% M& s第一個答中有獎2 {" ~* D7 @! I- n( ^0 v
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(x - ...

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, \+ W- S6 B4 a, Z7 D" a  z(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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% a2 }% z" _. h(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
  e. A; b' u! c3 r1 X似IQ題=.=
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# R! O$ J* D$ v+ @: n; W6 S5 F: 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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+ F# O( ^$ K( D% I5 v' ]4 h& I, q(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.........
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2 Q% P5 p% h0 e5 a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 ]