| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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; i+ L3 W( V* o- |) x/ ~6 j& l(x - a) = x - a
+ p; Z* E# n) V8 Y2 V1 ?: P(x - a) (x - b) = x^2 – ax – bx + ab9 j1 E5 ]" L- S' v8 S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
# W, |2 B7 F4 q; S+ N6 X5 m. m5 {(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 P, o/ f2 C2 k/ D: U! W. l
如此種推，6 K/ H( H1 u! W  S
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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' D/ `. ^0 K' W2 ^4 |: m[ 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4 e7 u/ j( h1 k2 z1 `

Originally posted by Triangel at 2007-4-18 01:26 PM:. [$ N' ?8 B( y& x& a0 t4 {3 S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc8 N+ ^- t7 F4 ~  I

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/ t6 P+ h5 U# v! r, c[ 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:
! d  \2 k, c% B- J咁難既=.="9 P% y. u# \3 p3 E, p" b8 a

% u1 K+ |# z+ H! r" }[ 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:
: t- D* e( |# @" s: b5 K$ B6 o" G5 _第一個答中有獎& H1 v* L6 V3 D6 q# R$ N9 j# o5 H
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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:, y5 A2 y- D& Q2 K
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
% }) o/ V/ j# l) e9 x) I7 l& [% J似IQ題=.=# u- X, M0 x) {$ y& X- e
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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:! K3 _8 m& R* I) z  i8 P7 n' G' u
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9 X8 H- ~; g& ^0 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
! b8 I) \) U, H% }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........." V3 f6 }2 J. x5 D' E

' P- p  t# h, C這條問題，貼落吹水版，名副其實" K  \. m" p% z8 e& b' T

9 x, `; e8 a! \3 R6 I* x( W[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]