| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎* j: x. m" U" g7 ~) _
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(x - a) = x - a3 _% I, ?9 n' @2 k; w8 [9 V7 W
(x - a) (x - b) = x^2 – ax – bx + ab
3 L0 w' ~: p/ T5 X# }+ ^+ D(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
' x/ ^( K" Q% Z! V/ A5 m6 d7 _, g7 {$ D(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd- A$ }6 j+ r8 R" t! {* |1 R
如此種推，
  q6 b( o* [; z: n  T8 o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???- H* w/ R( c8 k6 b. i: _1 ?! J
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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:+ @# Q0 W: o& C/ N% D( g
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:
/ f0 k5 E! ~& K: D# v" y: ?& w咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

( v5 c3 R& O; L& W
5 [: A$ r6 V3 H+ g( R' zThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 v! D. I' A: G! q, k3 g第一個答中有獎0 q1 o9 Z* I- F& r5 v. ^

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! |& `, q" S4 h' R1 Y3 K' V(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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( d+ G: u7 L" [4 y$ D(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題: y# r/ E7 n0 g  n' d
似IQ題=.=
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9 l9 V# W* O! m9 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:
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! ?" p- z. w5 J3 m(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
; c9 P5 j4 \8 z+ P" y  m3 F: n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.........  I: N' i7 t. C- l& s0 c
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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 ]