| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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, A% k8 O3 v0 ?8 I0 B+ F(x - a) = x - a
  r- O& ^8 X) [" V; ^4 p$ Q. w(x - a) (x - b) = x^2 – ax – bx + ab( j. a  P0 @. \! H0 q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc# j: @3 }; t' R# A7 i6 O" z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
# Z) s0 I6 W  l8 O! I3 j如此種推，
% e9 G2 H/ a' j5 m8 Z(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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, U4 J* K8 u2 N7 O/ m% Z[ 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:
( }1 P% {  b; W0 r$ U6 P7 l6 E: q, V(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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6 r* ]4 H8 a2 t! s( i5 f[ 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:0 n6 M+ Y, b+ `
咁難既=.="
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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:- Z$ Q; e& L; q& e7 z
第一個答中有獎1 M# ]$ F+ [( B7 I: c4 B9 A4 A
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(x - ...

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  ]) S' @) j) u- D: \6 C(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:' }2 f. k( y6 v: F1 R$ ~, S1 [

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4 P0 [) h8 x4 V% q2 N; }) j  O! V(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
" y" |% O) [3 K+ Z% z+ C" t似IQ題=.=+ w  R3 E8 K" L: x# j

9 D- H7 s3 J- T; a9 ^) f6 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:8 @  o" ~1 P! e) G: a5 `  R
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(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過, u; G5 L5 l! N- E* B
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.........2 Q  J0 e2 p  w6 F) U+ t

/ k; x/ @) Q4 K- m, L) N! Q' g- l* p這條問題，貼落吹水版，名副其實
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* I7 }2 E0 ]7 ?[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]