| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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, u0 K& v. Q: I1 {# C9 ~(x - a) = x - a
( W' E+ X3 s* V% S! o3 {(x - a) (x - b) = x^2 – ax – bx + ab! C' V* [8 Y) B; B  T
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! C0 q1 H8 [/ e0 @: q$ f: i9 ?2 u# T
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 ?; O! @& E$ \7 i1 z
如此種推，
6 [1 `6 W* T, D& N2 T(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???( Q( p" Y& X. l4 A6 X

  D# u# |- ~- _; k) b0 }* c[ 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. Z+ G1 O8 ^; Q

Originally posted by Triangel at 2007-4-18 01:26 PM:, V$ |! B1 Y) c$ |0 P* z
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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1 U/ D+ F% h" Z8 I[ 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:
7 m  k" Z  u3 q) Q咁難既=.="
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[ 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:
( U% t* U* E" ?) m第一個答中有獎, r* W; w6 G% a, o6 H. f+ R

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  y) `7 j8 f% _5 |  W& {(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:% A; x6 k8 R1 ~% _3 h; D3 K9 {
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(x-x)= 0 ，所以答案係0，is it?

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/ a) z/ P3 [+ l唔似a.math題
' o. t; F7 X, l+ E. n8 p似IQ題=.=
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2 o+ Y0 W5 ]/ f  g* x[ 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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(x-x)= 0 ，所以答案係0，is it?

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8 O2 w( i& H% E1 V, n0 ~Bingo~

waikong

我係學校個學生會單張見過
. q# V3 T3 b: ?7 M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.........+ u% y+ P6 S* M) ]
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這條問題，貼落吹水版，名副其實
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6 ?' R; P7 k& e& y2 f  v0 i+ ^[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]