| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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, [2 K* N0 d& b(x - a) = x - a
9 J4 L% `- P  K(x - a) (x - b) = x^2 – ax – bx + ab8 v+ U6 |; Y9 o8 E
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc7 Q: S( A1 y' k+ x4 E
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
/ A* _4 G" b& }0 J9 d/ Y如此種推，
4 R8 V$ Y: L- m7 O$ y: F" c1 |(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4 O( \( V1 f1 h' c) L

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 q9 M% Z/ X6 A* S- o(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:! j3 S" h! w. K2 r
咁難既=.="9 e; J1 [% S0 V2 D
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

/ d8 }- b  W; L

2 Q3 b3 X$ x( O2 T/ u8 S* jThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 t$ G; {2 H' y* U7 T% T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:
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(x-x)= 0 ，所以答案係0，is it?

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! s; v% |' e- y+ N唔似a.math題0 r8 o. f5 g0 w  ^" \
似IQ題=.=- j& d3 G. f6 f% o
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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:
  A$ w; g9 s% L$ o0 r7 a& v+ R# B# Y' F
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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7 h3 u$ T$ b( \4 p0 C! ~
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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9 a2 @4 H1 x/ V, j, E$ M3 d% Z/ c這條問題，貼落吹水版，名副其實
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* D! e0 {* z& d% N0 Y2 c; I( P[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]