| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
. o( W  K$ n3 B' A(x - a) (x - b) = x^2 – ax – bx + ab
$ K8 M, E2 H7 m% z(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) T. B. u$ Q$ T(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd% U5 h2 ]  G2 ]0 V) m+ U
如此種推，
7 j" q% l% j$ {" T3 ](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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3 l( H0 A6 v1 L" b& t( e[ 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3 Y) o- B2 K5 R( i

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ t$ S4 Y; O. I1 e, @(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:2 u& [5 c& e2 i# X5 s) f
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 Z1 b5 E8 T* e7 Z0 @5 A9 vThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:0 _# W4 w* j8 `" e$ m9 S4 i  M
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:2 P+ X7 j) z" a2 v# `8 K
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(x-x)= 0 ，所以答案係0，is it?

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4 D0 M5 y7 ^& M7 x& [! Y- g唔似a.math題
7 Z+ k9 _) E% r! ^* M! t& z" t似IQ題=.=$ [5 S$ O4 a: i2 O- r- {0 m
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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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% S* E0 Z$ L0 C0 I0 K9 N( P7 F. a(x-x)= 0 ，所以答案係0，is it?

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% e; W. b4 K( s7 ^  {Bingo~

waikong

我係學校個學生會單張見過
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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.........( ?$ \. T3 U  B4 I6 U1 n
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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 ]