| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
) Y# w3 b9 T5 `& b& V(x - a) (x - b) = x^2 – ax – bx + ab9 u5 t6 s6 v- @7 Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 I7 i" U! A; Q2 k* T(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd, J, n; L# j& x; d3 F
如此種推，
4 z- v2 D1 O+ I4 F! Z(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???0 _4 p2 ^6 ?; e7 e
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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& K: W5 `  @' W- [0 n, `, ]

Originally posted by Triangel at 2007-4-18 01:26 PM:) m6 m6 H% x$ P( i  J6 S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc" _! n6 O1 G& f1 E8 F* n$ ^0 R

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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:
( _6 E6 F, ^! S5 y- p/ k咁難既=.="
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6 g) t% h- Y) X7 I1 x6 Y; R[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 m0 A8 k3 a& e* Q( F& ]9 HThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
* o. _$ f, _: f1 s" @7 i第一個答中有獎
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(x - ...

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) i+ a+ T& \. @(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:9 E# v& N0 U2 ?! z$ u
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(x-x)= 0 ，所以答案係0，is it?

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, j/ Y! G7 E( o+ b  |! m; a唔似a.math題7 r" H" K  `! f. [& w" g% K( u
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:' ?9 M5 w+ A7 w/ s

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( K0 u) [) J! }+ v- B# k. p(x-x)= 0 ，所以答案係0，is it?

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3 B- p  u5 }1 N1 e$ h3 tBingo~

waikong

我係學校個學生會單張見過. X5 I: Q3 P4 c4 O% e& P# `
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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. p: _; A' S+ U: a  a這條問題，貼落吹水版，名副其實
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! N4 B) r3 W# m5 J[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]