| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎5 Z5 ?" C( v3 g: b" u
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(x - a) = x - a
; e: G0 U1 s0 q8 D3 C(x - a) (x - b) = x^2 – ax – bx + ab
8 F/ @1 ]1 {' o$ y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
' I6 F2 G1 p3 E- P0 H(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" \& X- o( z  n; Y# y5 \- u, b/ n6 F
如此種推，1 x* j! o, K$ Y! h7 v
(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( E4 R5 N! o0 J0 U( f8 C' V& @/ J: p

Originally posted by Triangel at 2007-4-18 01:26 PM:! o: p7 g; M! ?
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc6 x6 F6 O# ], ~2 a
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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:& H. {" V" ^' q
咁難既=.="$ i+ i: U  ], {, Z. z( x: f  Z

* g9 S2 Q0 e$ N: h* Z5 g7 v, v/ i$ H[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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9 D2 d) z" G1 W& ~. I3 ~. P9 oThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:- t8 U8 _! ~9 o7 d6 P% w4 @
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:  x. q' F; M* y+ X- D: c/ z. y
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
  @# s" o. h1 h5 n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:
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  h3 L9 {( s# E3 Y( V& u(x-x)= 0 ，所以答案係0，is it?

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5 b' o6 h, i8 L3 W# `Bingo~

waikong

我係學校個學生會單張見過
! H1 E6 D2 Z1 z' P' \: }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........./ J6 W9 S: ~( R5 t3 g
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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 ]