| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  |6 e+ v9 m: u4 d; b3 r# j& ?$ l

3 P# `0 m  Q( g# u* Y(x - a) = x - a/ M1 V0 s. ~  u, ^
(x - a) (x - b) = x^2 – ax – bx + ab  M6 j& P6 k5 {4 Q( R6 b
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
4 f7 b( G; {/ R( V% x7 ]- j3 B(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" n, H2 k3 g- ]* L4 m8 E
如此種推，
0 s  \4 J5 Z7 G7 u" t3 @3 C6 w(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:0 e6 m; Q2 Z' J2 v) x* K
(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:
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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:4 X# ]+ z$ w) U5 F+ L
第一個答中有獎
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8 `7 d; o, r% J8 l- C4 y(x - ...

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3 a/ k; H/ B7 }- j$ L6 |(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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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
6 y$ X, E4 V, W' [4 S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:
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: U0 F; \- A1 [0 q, L  u# d9 K) z6 x(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, L' c, G9 Z" y! I2 _' K8 G
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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. ?% E5 i' x! Z! N這條問題，貼落吹水版，名副其實% K3 d' z, F( R# o8 I2 f

, [, w2 K1 j, l1 s% I[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]