| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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2 u3 ~. v6 I2 o" S(x - a) = x - a
# C  {$ I: K7 r8 e; S  p(x - a) (x - b) = x^2 – ax – bx + ab) {+ E5 H' \# s
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 c$ l, y! D; V7 g(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
5 ~$ R- X- Q% z  H如此種推，
# P/ [5 W. r+ p(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???7 h) C6 q( G- B( o# @1 D& l
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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8 b: b$ e- R# Y  e/ X

Originally posted by Triangel at 2007-4-18 01:26 PM:
: [7 x; k. ^( ^) W9 N(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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& \4 A7 S& I7 W! w' 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:
3 X, ]8 {/ }- Y: @: `7 d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:7 q& }! ]  N3 a$ ?3 ], |
第一個答中有獎2 Z0 M0 Z& I9 E% j

' C8 U% {3 {. ]+ O(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:# B- c; R+ H7 o2 E

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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 Q( I7 D  c; ^  d* W
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:) l& r) x' W7 [0 i9 Z) q7 V! E
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(x-x)= 0 ，所以答案係0，is it?

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% k, w/ |  \' f* R% e9 ZBingo~

waikong

我係學校個學生會單張見過
  A9 U# L8 _9 x7 }8 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.........
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這條問題，貼落吹水版，名副其實: T6 W' k, g$ g) Y+ R5 {- K

' T- R2 o2 w( F. I) ?[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]