| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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$ m: k5 g& Z+ |6 ^6 r  b0 A/ j3 O(x - a) = x - a
  y) S" J& P0 a: j( L(x - a) (x - b) = x^2 – ax – bx + ab, ?$ ~2 ~: Y2 H+ T- g% _: e# W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
1 h2 B" t" z1 ]( P(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; s# t1 |! J3 P. v* \
如此種推，) ~- S6 o( z) s/ P8 U
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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' ~3 e  U/ R  L2 \5 w9 ^2 P[ 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:
' t* s7 R$ M" i: B  L. V4 u8 ^(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:/ X+ I) ^, j6 q: e0 W" C
咁難既=.="" z% q3 E) k0 x- R7 @4 O$ n1 R9 v

0 O9 N! R- d/ k9 D* ~* F% h[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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  z; |6 F1 I; u; w: KThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
. m# P0 ?) f1 v' k. K, O第一個答中有獎0 ?/ ]/ Y; g& u+ i/ B* |$ N
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(x - ...

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: M) w$ ^* U, D' g% g# b(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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& u+ T1 B+ Z: ~' ?(x-x)= 0 ，所以答案係0，is it?

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4 T+ {; I4 e- t( X% ~: X唔似a.math題
8 H/ A" A+ n3 ]! b$ W" l0 R2 n7 e) h0 O似IQ題=.=2 B* R2 a' W8 \- H" @2 |  u8 w

5 L, b4 c- o0 b+ h' }4 a6 q[ 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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(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
4 ^; }2 D9 v# t, M. k7 r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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4 t: |% P& o; H: O這條問題，貼落吹水版，名副其實8 f, T; A$ E0 u0 c0 M# @

; v( F) l* S3 q[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]