| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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0 m. S6 z- b* \1 P, ^7 |0 ?(x - a) = x - a' x/ Y& p6 e7 [7 o' M! A3 _
(x - a) (x - b) = x^2 – ax – bx + ab0 e4 x: N0 }8 t
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
$ S, l2 \0 G3 E! z3 l8 ~% b(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* o; ^# Y5 P1 i9 m6 i# {; R% n# Z
如此種推，. f& l7 T2 p% S, A
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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, G, W7 H) N% |/ z$ r0 k[ 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:
) ^/ y4 \2 A& H- g, q2 C(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc5 C1 |7 O/ S3 l; ?- _/ N: @; H% [

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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:2 J. I# _6 ^6 s% k; u& [
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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# z4 d0 u& R5 k  ~Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:% @! I& ~' Y  J, b
第一個答中有獎4 q/ E/ M0 u4 X1 W% N
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(x - ...

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. v7 B$ a8 C- S- A(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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* T, e# m" U  P5 Z  ](x-x)= 0 ，所以答案係0，is it?

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唔似a.math題, C! Z1 f( R9 b8 e& D6 C" F1 [
似IQ題=.=
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[ 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:) j9 r, k: T5 ]' M* n  v6 l& M

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(x-x)= 0 ，所以答案係0，is it?

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; T+ d  J& A8 y3 U: W6 TBingo~

waikong

我係學校個學生會單張見過
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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.........3 l9 `2 x) ]2 z
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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 ]