| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎# @7 {! ]0 @5 B5 c* t7 u4 f
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(x - a) = x - a; [5 [1 c% P" d  {8 v, J4 O
(x - a) (x - b) = x^2 – ax – bx + ab, }! `8 J$ b( ~7 @4 F
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc9 i1 U% s' A& X& V. e' E
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd% j8 o  q) J6 Y3 F! m
如此種推，
: u# u6 X7 D: u: Q! m(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???' K( Q6 W$ H: X' s; m/ P
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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! F/ i5 T3 f3 n. X: r

Originally posted by Triangel at 2007-4-18 01:26 PM:6 ^  G3 V3 Z% J0 v9 H7 n! k
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc" N8 _+ v% m5 {2 {4 G+ X* {
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4 R0 N9 Y9 F/ J# z[ 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:# G0 X( `& g9 G- ~' c/ e
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:
& P% I6 r' ^* f4 q第一個答中有獎
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4 i! B; t6 }( p. `# t. |) [% s(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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2 C5 `( q% i+ o7 V+ b+ M(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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# Q/ F/ x  f7 m/ M3 u! v[ 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:7 j9 h: g; M8 B" ^& u. Z6 l8 j- m

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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
3 M3 P7 N5 l7 _7 n7 ~* r1 }5 D$ D+ Q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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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 ]