| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎! X* V" L" @7 r4 @- m( X

2 j, d5 e% Z- Y7 [, x; @" A(x - a) = x - a1 R  J6 P- K+ i- T
(x - a) (x - b) = x^2 – ax – bx + ab0 ^0 T, d' v& W' M8 Z- p0 K. E
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
$ q6 X7 c6 h) G( Y' U" L2 `(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ r5 _' b# F$ X4 X
如此種推，+ ~9 n) {4 I2 c" a# g# S+ N
(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) T: Q4 m& ~0 Y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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( t8 m/ K" x0 [. q[ 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:
! w% P- P& B6 i咁難既=.="/ v1 t; d0 x% q9 @, Q% n

& I/ R0 e2 g/ X7 r& L" E[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 B8 C- j. k7 N4 mThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
( b/ }' ~3 f$ u, ^: ^: P* z第一個答中有獎" d' Y& @: y$ U( h
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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:: N+ L: j, s; `1 O/ D  J

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題7 j0 W) \* k4 ^# M. G# v3 k7 K& i
似IQ題=.=
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0 O9 R3 s5 Z  }[ 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:7 e1 }6 N: K7 e& W& a$ s; c

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- X% T& N8 Y" Y! ~(x-x)= 0 ，所以答案係0，is it?

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; S, z! r0 m( s( H5 `% q" h% ABingo~

waikong

我係學校個學生會單張見過
  ?7 }/ |2 o/ {, {# q/ j" a; b. [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.........! A! A% [( e  ]0 y
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這條問題，貼落吹水版，名副其實3 h  c* r4 Q; D( c* X$ r, E% P
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]