| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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! f- ~% M8 d- X/ a* E(x - a) = x - a' p7 W3 q# `# {0 m
(x - a) (x - b) = x^2 – ax – bx + ab
% v1 c+ T' N  z(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc4 N' g, L) M4 W1 s1 _6 T
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 z' U4 n, \; X; b  @
如此種推，
' x4 J: x7 Z% d- \: r4 |(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???5 N5 _( d( B2 _( A3 m6 i
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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:! ^: e8 A( U: P$ ^
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc$ Y1 j1 `1 [4 J: j& ]
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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 v$ K# e3 c, A: S咁難既=.="% ^7 L; n. ~$ t/ x% X$ R
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 R: `) I4 P. _, n* ^- UThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:9 l: F" f; a/ m5 ?/ V
第一個答中有獎7 ~% I& I; K4 S; S: y
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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:0 J4 r3 G- x/ v7 t* m6 U

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(x-x)= 0 ，所以答案係0，is it?

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8 D9 p" I2 x' h, n$ D8 D唔似a.math題# t* B% {4 Q# _9 w. y9 y9 G/ B3 L
似IQ題=.=8 y) a3 |. w8 J) ~

6 c) ], r. M9 ]% v/ F[ 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:& m" ~* ]% v* m( i+ ?4 I$ q; ]
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( r. l& J+ m7 }1 \(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, Q5 L0 {  a* ?, [* s+ A0 T
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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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 ]