| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a( d2 m( H* q. O5 @* r" l' y
(x - a) (x - b) = x^2 – ax – bx + ab
; i# {# U6 z! P: z2 t. s1 a8 l(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc% f8 t3 O' T1 z: i; [" y
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
; [& x; X; F) K3 v) C/ T如此種推，
, E" p; D* }2 N1 z* x& @2 S: D) ~(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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: b% L$ Q* E+ z5 y6 J3 |, F4 n[ 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# L& w' ^1 Z" i3 |* h1 @

Originally posted by Triangel at 2007-4-18 01:26 PM:# ~' N6 K9 v$ `* q" Z. o* `( S; {4 r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc3 s* K& k$ w6 D0 W7 a* n
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; ~+ q% y" i# r# X: ~. 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:
: {6 r' |' X: G4 K+ j$ u+ {- v( N+ n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:% B4 `! H) P# Y( k# @
第一個答中有獎! J& I+ \& _' m
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(x - ...

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5 L* H" w& G& L" l! B3 S- s# F(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:& G0 J  k6 j  _" `' J% U5 o
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(x-x)= 0 ，所以答案係0，is it?

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1 q  R4 u. f8 W& v) L( H1 r- e唔似a.math題
) w& k& i) J3 k2 D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:: m" J& A7 j: B! q' m, N

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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0 h9 q3 N* H& _4 g0 l, W2 y( I3 D1 U
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.........6 x5 ]9 U  ^* T5 r1 V5 d1 B& P7 d9 W4 j

6 }( B& o5 w0 `. [; k這條問題，貼落吹水版，名副其實! S7 N; A  _1 \
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]