| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ `$ @3 j4 E2 g+ u- C( N% a' i9 \

% }# N2 Y! S; h; a(x - a) = x - a
' ]' b4 F$ @. t, k4 D2 [(x - a) (x - b) = x^2 – ax – bx + ab
! g- Z4 Q! l8 Y4 b  M(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc) m( s, z% x& n
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
7 M; Z$ F9 D8 O+ T( [0 B如此種推，
, u4 S5 d* O4 x; r# R(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???* \. A+ D, Y0 q  b
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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, \- L. B! a9 U) C1 j, b8 T

Originally posted by Triangel at 2007-4-18 01:26 PM:& n. v( m, X% T5 C
(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:
9 \2 d# X' {: a0 P+ B- G咁難既=.="
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* S% p  b3 L" M: J[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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; l1 v( O0 a' m3 q4 ^. kThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
! d- N: L! C5 q2 w- I第一個答中有獎" J! p: q, H: j2 b

% n2 h# Y6 d/ D9 z2 p(x - ...

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# d- i( l( A$ x2 C+ i. B8 D' n(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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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
* ]! Q- U$ S( D% M6 V似IQ題=.=5 s# W8 q/ C# o: X

# `* t& t% n0 z& G' j0 m* G[ 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:, G1 J2 m* d% X& N- S

3 z% R' V1 U: a! `! A1 V
: e- G& [) m8 L(x-x)= 0 ，所以答案係0，is it?

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* H2 k% N8 G% ~: `Bingo~

waikong

我係學校個學生會單張見過
) m9 ^1 s' S$ h* c) F; t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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這條問題，貼落吹水版，名副其實
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$ r7 f4 t7 r) n" y4 |6 ~[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]