| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎+ n; Z( R% Y' p0 j) V
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(x - a) = x - a
) q/ U+ o8 H! Z  t(x - a) (x - b) = x^2 – ax – bx + ab
- p- W- z  l- ]3 L# J7 F) n(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc3 H' t9 X0 A9 t0 v% ~; w; I
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
" `! i3 {$ |7 P& m/ v. M5 U$ S如此種推，
4 F8 n% w$ |, a(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ Y1 a( Q, j- T6 _9 C& O  _
0 _5 O5 U2 F# s9 x
[ 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% W# n& }2 W! Y# p( \5 y' J+ p

Originally posted by Triangel at 2007-4-18 01:26 PM:
" _8 C9 o! B! N& y4 v! o" K* v1 F# {(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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* A- Y3 K+ X) `! g[ 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:, c: _; t- Y7 B4 _
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:. o8 w8 o0 J  @# E! L  z- O0 n5 F
第一個答中有獎% k9 W5 ~9 e5 i  F& Z) e  j: x' d. Z

4 k# |/ [& j! T9 |  B6 P, [3 M(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?

1 L+ ~0 i2 {1 u% Y4 {* I" s$ K5 [" f2 l' r. H) v! P

; {! o" U! F& h) D6 o唔似a.math題- l2 F3 b# @4 X. f2 @' `$ ?  r
似IQ題=.=
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9 U8 I5 x' [1 s[ 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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' r. E$ k# O3 Z$ K& q1 W& x9 k4 F3 @8 }  ^' W
(x-x)= 0 ，所以答案係0，is it?

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. w  s& q" e& G9 ^Bingo~

waikong

我係學校個學生會單張見過
% V/ r) }" Y* j; {& c( [; \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
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]