| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ X" Q/ d) }( f: {

' U" r5 p. G* J8 s! P! i2 ^(x - a) = x - a
% N7 u% Q4 R, F2 ](x - a) (x - b) = x^2 – ax – bx + ab
: h4 P" s/ [3 H+ `: ?% _- Y6 f(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
$ g4 \5 G' J! W- t(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd' M, H& \+ U) e* O' u! E# ~
如此種推，. k% q# v0 F2 r5 o( c* n+ u6 L. |8 z
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???. Z: I# ?# Y9 G! r

: S' q/ ]7 }0 A[ 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:. z* s( G( _2 N+ U; l. G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc. g1 L2 ]7 w) p0 k

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" z$ f5 G- d( |# H" V; _[ 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:
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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:: }9 L4 q) ]& R6 `
第一個答中有獎4 W: e2 `3 a, B$ d; ?2 N
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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:
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$ y4 U& x( L  U% @0 h- l4 ~1 w
(x-x)= 0 ，所以答案係0，is it?

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( b: q" `/ ]! B+ v; m唔似a.math題5 r& _5 b6 h% _+ n9 ~2 m
似IQ題=.=2 L. ]' {! V& A6 G: 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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& t, i* ~5 S5 yBingo~

waikong

我係學校個學生會單張見過0 H" D4 m7 \- x) B4 K9 r5 Y5 q8 r$ C% k
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.........5 w9 F6 w5 n* Y) ]. g* V5 P: V
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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 ]