| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
2 C4 e7 s1 k0 C(x - a) (x - b) = x^2 – ax – bx + ab
! q# V; k3 _* i( e; \(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc' w' e% y+ ~" N
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; e$ P8 d4 v, V+ e; k9 X
如此種推，
/ F- f# L6 B* }3 `2 |/ K. l(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:! C% p- g4 D. x. u$ Q" |/ X
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc3 }5 m) j% V  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 E2 k. q- A& D/ U2 |6 d- r咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 |; t  G) Y4 Q* u* DThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:4 @/ k/ A6 W# \% O" Z, C
第一個答中有獎0 ?: ^5 i9 b8 S6 q, e
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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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: o7 n! p6 ?: C; d1 u, e8 Q(x-x)= 0 ，所以答案係0，is it?

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" f$ c9 r$ _' p1 _+ m2 I- S5 a2 l) l$ |8 W6 f  P, x7 ~* P, [& f; ~
唔似a.math題: i2 W) ^6 `' \- Z# ]% p
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:, c+ h1 p; J5 a2 w( h
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(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過
3 l+ N- t1 w# w  _) F. A1 A0 ?0 M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 ]