| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
7 W4 t  e" F/ N8 M& d1 z# a0 \(x - a) (x - b) = x^2 – ax – bx + ab- d: i1 ^4 N$ i5 n; x9 F2 s
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" u9 R# S4 E0 |3 {
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd5 n! S! N% u) v
如此種推，% c# e$ O: W5 A/ F4 t
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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# J! c# V% C, M[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
. N* f. i" o, j& I$ p4 t6 R2 v* f(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc' f, |7 @+ J; M4 I9 M

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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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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# q% `# m' W! a; D; Y8 _3 i8 `Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:3 z6 S0 b( U: T: p
第一個答中有獎8 n! A2 W5 ~( H3 ^0 t
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(x - ...

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9 x" J" B+ {. f+ Q/ e/ A  J(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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/ W) J& i) t( Z! ?(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題; x5 K1 C1 }& i" ~
似IQ題=.=9 W7 U  f* u+ }
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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:# q/ Y" `3 D/ O1 i8 Q
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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, {! g) z" @. p4 ]; Y6 R+ s
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.........4 t5 ^3 R) I8 }& g/ i, y
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這條問題，貼落吹水版，名副其實
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2 }* n" J. w6 A" x8 j[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]