| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎2 @& F. w3 }8 x
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(x - a) = x - a. B& Y5 ~8 L0 E1 V, [
(x - a) (x - b) = x^2 – ax – bx + ab
! O# B+ c. V1 U. A2 Z0 k(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc# Z- A1 x8 H1 ~
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
5 a/ V$ H3 y3 z( n" W如此種推，4 p2 i) V6 g4 O1 Z4 o  X8 t
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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' H- c2 v' G% S. G; L" D# q9 s[ 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:
/ S9 r1 u7 L7 s) I(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:
! o; c8 M7 Z# ?9 l咁難既=.="
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$ N: L% f7 ]! N0 y- J6 o3 ~7 i7 Q[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 O0 {( [  \) a! X. `4 uThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:+ F& g1 J4 @$ ~. v, r
第一個答中有獎
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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:  z  T. m. s6 [% M3 ]2 V  {3 K$ X! ]
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(x-x)= 0 ，所以答案係0，is it?

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5 Y! k: A, W/ E8 O( z唔似a.math題
4 t; `: [  X8 s3 z& S2 w, K似IQ題=.=
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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:
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3 c) @0 u, I# }* e  g
. p+ W6 v6 n: G; n(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0 K: _; m! C" z4 s  x$ q4 ?
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.........8 }7 x; W9 I% z" }
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]