| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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. V# G; S( j7 K' O, ^(x - a) = x - a
* I9 D  K2 U; y" J: s- M, m: D(x - a) (x - b) = x^2 – ax – bx + ab4 @+ \) ]" L% `" k" \: c8 V
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc& s% D1 b. p5 W' V1 Y) {2 M
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd- @. K, ^* X! {0 @
如此種推，" ^5 f# g9 j+ L% |- C" w
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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" r# _% p5 f1 n1 b/ K# _" W& z[ 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- R" Y+ z' c1 E

Originally posted by Triangel at 2007-4-18 01:26 PM:; H! _. [/ E& x7 G0 N8 z+ ^. q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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: X+ I; l* R; d, C9 g% M[ 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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4 k1 H( b* e3 ?3 x5 R+ f& ?[ 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:
- `  l! N+ W" o% i4 [第一個答中有獎
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  E9 O& V3 n- }% a9 C$ v. `(x - ...

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; Y1 @+ _$ |: T* Y, i6 K) }(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?

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唔似a.math題$ n- |$ C8 M& \- q2 C
似IQ題=.=
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8 Z: w- X/ g" I* G" K( 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:( L& w* C; m* B6 Y8 D/ n* @, U

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(x-x)= 0 ，所以答案係0，is it?

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( n$ U  ^1 V6 F7 PBingo~

waikong

我係學校個學生會單張見過1 k, m7 E, c+ ~4 ]
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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% r( c: f% ^5 y- ^+ ^1 Q' i這條問題，貼落吹水版，名副其實
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( L" @& w) I- @/ I[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]