| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
1 v  g" `: l- c7 [) _(x - a) (x - b) = x^2 – ax – bx + ab
/ j9 K) Q" O, M# h, U- h/ L- T& z) ?(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
, p8 k* ~! c) i& U2 X(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 L$ ~2 ^3 t) }7 Z
如此種推，
  d6 o5 M' j3 S# h(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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:
  B, U+ G" w- c. T9 y& H7 x(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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! \0 y" P) J/ c# K* p[ 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:
. ]5 n' m5 @) K) W: M$ f咁難既=.="* Q8 P7 x- G/ G& a/ v

7 a# P8 m. p9 }, B% b' H[ 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:! q  l, [+ T& Q5 j8 T( p$ l8 q8 X
第一個答中有獎1 F0 @$ ]6 x7 {9 L* a8 p, g5 ^% |4 l

( `' `! h( d* }4 _: ](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:
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(x-x)= 0 ，所以答案係0，is it?

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; d2 M4 P/ K, {; P$ c唔似a.math題/ x( p8 d* |9 L9 {/ p
似IQ題=.=
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7 Z) f+ g) K% {/ o[ 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:9 o9 k! ?7 O3 b
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" q: }% T; [2 J" K(x-x)= 0 ，所以答案係0，is it?

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4 Z, H& e, I/ [- l! u! b# tBingo~

waikong

我係學校個學生會單張見過
% }7 B1 T% X  y5 _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( Q/ E& L8 {% U. }
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]