| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 A8 F( `- Z3 Z

7 B' \. B0 Y2 T0 Z* ?: N: f8 P. z5 L6 w- s(x - a) = x - a# [# c5 Y8 r+ {6 B7 G' j
(x - a) (x - b) = x^2 – ax – bx + ab
8 P1 h/ \- r. h9 p. l1 @8 b' a(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc) L' V7 e& `) `
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ C0 n9 z  K. Q; t# z
如此種推，( s$ Q! C3 y5 z; X% }
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& K0 N$ T( e4 N/ X' r0 u

" P6 U% l  \# b! d/ l* y[ 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" v8 i# A) T! [5 I, @" G& I4 ]$ O( D

Originally posted by Triangel at 2007-4-18 01:26 PM:* J" f- h0 A+ i1 F/ F$ x* x
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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! F4 i1 f' s' p" \) ^[ 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:4 |* \$ {" N+ e" ^% o0 A( I
咁難既=.="
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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:
( N2 k% b9 c* s+ [: u第一個答中有獎
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) ~  `1 @0 ~; }# u(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:: a/ a4 w, f4 z3 a# m& b% G

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1 `+ Q* l; G' F: j5 G& i(x-x)= 0 ，所以答案係0，is it?

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8 a+ b+ L& x) ~3 x" G  c唔似a.math題
. c) N# R# Y2 [. n似IQ題=.=6 Y8 A, R7 u. h( f

- r8 I% b2 k$ D% g[ 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:
* J' ?/ S+ a) A: y
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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, c' u) n. ?9 T6 R+ j" X
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% y6 O% p, ]/ [# j
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]