| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎* A; R4 b5 C, k8 J' g! w/ ^
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(x - a) = x - a0 e( o8 {' o6 z5 M% k) W
(x - a) (x - b) = x^2 – ax – bx + ab  L1 l0 O% a; B7 Q& s
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc  Q$ S; @  e8 g* e8 u4 S6 y; D7 q
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! A' A" z# P$ c: ~; k) R
如此種推，5 U' g* B; n  u  h$ P3 P
(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8 _" C8 e7 b0 `. v# ?

Originally posted by Triangel at 2007-4-18 01:26 PM:2 H# E$ ^# V" t) |1 z+ \
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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+ k) [, K( d( D[ 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:8 J/ I& P6 `7 x  M. p! Z
咁難既=.="
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& C1 \0 {3 Q8 [  h[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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( G( k9 `) U' p( V8 A: L" u+ o- sThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
" B' |: K* z2 I- a2 g# y! {. \第一個答中有獎
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(x - ...

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; m! S( b: u; p(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:: l( d3 x/ ^" E2 S; S- a  {4 o0 ]) m( \

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; p) a3 W: k: O: E(x-x)= 0 ，所以答案係0，is it?

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1 a. W; c6 G" Z9 k% D唔似a.math題* E( N% M' k0 B, h8 k2 P8 o
似IQ題=.=, r, s5 r, R( N1 c- z1 a9 j1 K

: X' `( A4 h, Y7 a+ F  [' 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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(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
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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
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& g: s! M$ R5 j3 C[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]