| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎. g9 f, n, d6 v6 B) H% ~! |$ b* F

) H9 S, g9 a9 E. w' F* W2 t0 u(x - a) = x - a' T# Z4 Y( P. J7 L# H! w. B
(x - a) (x - b) = x^2 – ax – bx + ab
7 R+ h+ R/ ]8 l# Y, i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc. z& M& m6 g/ ?
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd7 {$ q' A/ f9 d0 W: F
如此種推，+ R, g4 o4 B5 m5 O5 n
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ m3 \) S3 P' S0 r8 x+ R
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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:
2 @: H7 A7 ~7 f* r+ T(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc+ S4 R$ J0 g9 F8 _* e1 W. B2 N
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% l0 R) n0 t9 G; J9 ?) 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:
% n* s, C3 L0 E" W6 H- C+ C咁難既=.="2 ?# ?; ]4 L) {
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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:
3 H, d: P* }+ i  K  o第一個答中有獎
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(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:+ ?3 J3 ~& G# E% {
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(x-x)= 0 ，所以答案係0，is it?

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9 U: m, ]; v* N1 d4 E' Q1 {唔似a.math題
2 M( T" s: L# A. b% F似IQ題=.=9 ^3 u4 y- J; E2 l! o
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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:5 u* T+ |" L, o: {8 L) E9 X- {0 U

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+ {# H- X" T+ Q( H+ K(x-x)= 0 ，所以答案係0，is it?

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9 _) [* H& Z, a7 b, k3 P5 YBingo~

waikong

我係學校個學生會單張見過: h4 P+ Z( q: ]5 r( s& r. m: u
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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* Y4 A& G: N4 {這條問題，貼落吹水版，名副其實) p0 P3 l1 j2 ]+ c
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]