| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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! L* w" f% D7 _/ ]7 B(x - a) = x - a! P: G7 @# U/ V0 A( g6 }
(x - a) (x - b) = x^2 – ax – bx + ab' u( `2 B8 r/ N: N: }
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) d# V8 K# }! f(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ q1 G6 F6 o/ G* {; S- a& c
如此種推，
) u9 _7 q' b( p# e3 P(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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; O. e: [4 n( j[ 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:) ]2 L) x. _) X! R- d+ o9 R
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc( x% u. P3 C- e

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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:
0 P' x( q* e* T& d( p咁難既=.="
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) N4 C9 `& ~$ a, n  K& Q. h[ 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:
& b6 n) }. x) w; F/ h+ r3 f第一個答中有獎3 W# F& H+ G7 s- P6 @- M/ P
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(x - ...

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, r3 ^0 @3 `8 j8 ~/ [(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
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& s1 x# y' |. ^8 m$ F! l[ 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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(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
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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.........% c3 o. o) ?/ [% A& i: \+ @6 k
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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 ]