| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 @$ j$ y- a. R& R/ L0 S5 J4 x; N3 W1 }

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(x - a) (x - b) = x^2 – ax – bx + ab
. K5 t+ v' J/ m# w* K2 C( Q$ B(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc/ l& s6 V1 |- f  [: w
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! H7 r$ d$ t4 Y1 x$ h
如此種推，% H/ P  {( G# |! H/ O5 h; @1 k
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???3 I. A4 I" g% C, v0 n
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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:2 T- s! L! h% J( b& o6 v+ m
(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:0 m7 C6 m" h& R8 x
咁難既=.="  G6 x6 l: X6 H! S6 I3 ]$ ^; }

1 i4 Q% s# h3 _[ 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:, _  Z& Y) i3 T; q0 B: _! w; q
第一個答中有獎
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(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:: i5 l# D6 B/ H" \0 q) S$ k

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(x-x)= 0 ，所以答案係0，is it?

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4 I  \, a9 k1 M# E3 [唔似a.math題
5 M2 E3 a+ I+ c1 W似IQ題=.=/ @1 V) j* V5 h' E
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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:
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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+ M1 P- ?$ [8 M
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.........! E0 X1 B* N( L& P2 q) X/ ~: a

, @% I* F; \6 |3 l* t這條問題，貼落吹水版，名副其實8 Z  Q+ P- L$ G
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]