| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
2 c6 u  @- [& A(x - a) (x - b) = x^2 – ax – bx + ab3 \2 A) C$ C$ n  e% o4 O1 \7 U; @
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" q& D1 \' q* F7 p: s1 Y; k1 T
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
* |4 c/ f+ o5 W% C% e( G5 m. ^$ E# d如此種推，
$ K7 T1 F2 p3 Q& _, F" J! H" \9 y+ k(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???* Z' F6 R. z7 |3 H6 r

3 T+ {3 @5 S6 T5 K" T# |. X* g[ 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:# L6 m. V1 X* @" r# O/ k/ R
(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:
9 _; r& p6 r$ c  m咁難既=.="
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. ^# T0 c- m8 a9 \% ]# ~; }7 @. T[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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: B+ I. R1 `+ H3 r- p/ d. HThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
( Y! m  d' I2 H8 E第一個答中有獎9 O  S" ?% P( P

* f+ l  \2 s9 T2 d6 L2 a! _(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:! C7 [2 E/ U8 `5 ?3 Z9 m  a
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(x-x)= 0 ，所以答案係0，is it?

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* a6 S, w. |" r6 J' m唔似a.math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:* }( W7 _) K8 B( l8 W# [
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3 b; N" O. s# u+ r& F. n(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4 o  \% z( ]5 H  j8 O; Z3 {- R3 j
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) x( r8 \0 g" O7 k+ j* Q( j

" @/ T3 @4 k4 z+ p9 p& ?[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]