| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  ?4 ?8 C  {0 e( O' H- E: o4 C) i8 X

% G$ z* e5 I: S/ t- |; `(x - a) = x - a3 d, W4 m5 ~- P9 y4 e9 r: t
(x - a) (x - b) = x^2 – ax – bx + ab
8 d+ q0 w/ r% A6 r5 r& G, o% x% Q* ?(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
. O& `% K4 }+ Q( h2 j8 K(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ P2 i* \3 @9 M2 ]' |6 _- P, W2 s
如此種推，
" `, u& a* \& `5 ]7 P, V(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???% ?9 e4 R. t3 W: Q& a
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
8 B' Q6 K; X5 j7 f1 b(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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1 g! ?" o# F/ [3 o& `+ C+ A[ 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:1 Z  u* {; Q: m5 K1 r% Q  k4 b
咁難既=.="* ?. y8 ~3 Y# R
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 r: s. M. V# W+ nThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
! b. L. i- k; t) h% q第一個答中有獎
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( n+ [& |+ P7 R3 h- ~(x - ...

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4 J6 g5 ?% m3 i! U5 ~(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:0 _& j9 X: A7 g6 Q6 p* z1 b0 z
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. u  |$ c# c  I" J
(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
' k4 X; D$ v; h. D, S, @似IQ題=.=/ ?' Z' ?, m4 M6 q" C' z

/ [+ w/ E/ C0 M: W- Q, y' D[ 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:" w0 {& Y2 S. O0 X
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(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
. J9 v; }7 k% w( z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. v0 X8 v$ \& T. U6 L8 S
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]