| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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9 U/ R. b4 _) s0 v(x - a) = x - a4 y) G: `6 }) u" O
(x - a) (x - b) = x^2 – ax – bx + ab
1 d. m0 f4 \5 l: ^" e  R, Z(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc1 V' l9 b) c1 N8 n5 K( `
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
8 @$ |5 x. f4 f如此種推，
/ {* M$ O' Z9 p(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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7 s, S, H8 V$ Q- i/ m' 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* @1 u& M  `3 T8 r9 v0 f" n- o

Originally posted by Triangel at 2007-4-18 01:26 PM:
7 U- ?" [2 k  y  q(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:
' ^, G2 |; z( m& G咁難既=.="
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* o! B) F4 K0 _" }6 T[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! X* ^8 b2 L4 X" |- }# SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 ~3 ^# R9 J- I$ r. w2 w* J1 z第一個答中有獎/ b3 B% A3 r( N% B; O# S
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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:5 Q$ T6 k% L; q& g" E

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(x-x)= 0 ，所以答案係0，is it?

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9 l& s' m8 s9 k& ~" U/ V唔似a.math題4 {$ _; d0 R# o$ {- S1 J
似IQ題=.=0 U, Z% j$ {: i9 S9 r

5 _, x4 w0 c  t[ 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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8 y* i1 Z4 p' ]1 x3 i(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: V! k" J# N$ t- Y! ~; _
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.........! M# |" U5 K2 y9 J) J3 ~; ~

) {  I+ I: @  i" {1 V! `& m- z8 P$ r這條問題，貼落吹水版，名副其實& g1 o1 D5 T% q% C. O- ?
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]