| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ v, {5 Q8 M0 S0 q4 c6 i2 c; Z& m
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(x - a) = x - a
. ?4 a7 h7 i9 Y% Z; t$ d6 t/ ?8 e(x - a) (x - b) = x^2 – ax – bx + ab
" a8 m- d' B5 _$ j7 K(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" N* J: s/ w" f  y6 C(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd7 _6 |7 l- Q4 _' e
如此種推，
+ o8 O. O; D, o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???3 x# I2 {  h5 @5 f: X

$ A2 J7 |1 A; H[ 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9 E" h6 Z1 J" ~4 J9 I" j* i2 i

Originally posted by Triangel at 2007-4-18 01:26 PM:
% a/ F6 A) x4 a3 G' N3 H* ?(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc5 p; `! m: Y- v8 A6 P

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/ \/ `/ p/ C% F2 Y[ 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:( o+ _, `, k+ t" c+ k$ T0 I5 x
咁難既=.="
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% k% ?2 W+ _1 B0 ^0 e' O[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ D! ], I0 m; @1 p% @2 h" }5 nThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:& y5 A5 q" n! ^$ e
第一個答中有獎
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(x - ...

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: ~0 }" y0 X8 b9 M5 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:
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4 _* R6 [  Y2 e(x-x)= 0 ，所以答案係0，is it?

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8 S+ \  g7 C) T1 X; E, x8 O( N* ^- F- n唔似a.math題
# x2 P; C  [* M* t" U* D似IQ題=.=! {( n; ?) N" u. U) d7 `1 k
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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:- N! S0 x( \1 R
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( ^( e8 k% y- m& c(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
- o' F3 y, ]6 T0 o1 U$ N: M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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$ t" T' ~% d% U3 ?' S這條問題，貼落吹水版，名副其實* y6 a. y5 u# I4 j

2 W, G% S) ?% H  Z[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]