| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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; R0 n9 F! R6 d5 J1 v(x - a) = x - a9 D  D# n5 e! ^7 F
(x - a) (x - b) = x^2 – ax – bx + ab
! d* J5 \9 c" U. g+ `7 S(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
/ f4 |6 g6 X. @( s(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* _! d6 y0 e! F5 S( T4 O
如此種推，
/ S/ Z1 k3 e  n# w" ^: H% p* K2 _(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ v! C0 J6 R& B8 W/ l

1 w7 j3 e" l9 r0 {0 I, F[ 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:: i* S! i" W  n9 o3 S2 G4 D3 I
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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4 Q- s% @1 w/ ?. U  U1 u- j, @+ [! f- b[ 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:4 S- U. w0 r& l
咁難既=.="$ w5 q: D) _" z+ {0 O# t

6 {1 {7 }3 L. L8 `9 K[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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- E, ]' |% f8 b6 ~6 h! f1 LThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
, O9 ]* o5 l! l# P: K7 f* l- I第一個答中有獎4 W* K  N3 X4 s
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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:
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' L/ Q* c' T' H/ X0 y2 n0 ^5 I(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題: i/ C" {  v# C) J1 v5 W. Y. P
似IQ題=.=: d9 K- y6 i* m! A

4 L- H0 g- P7 f: T0 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:% N$ T- H; Q; L9 X
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(x-x)= 0 ，所以答案係0，is it?

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+ E0 Y! n5 r+ z  T; Q& C- sBingo~

waikong

我係學校個學生會單張見過1 S" ^$ R' X' Y" f
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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/ q0 h( Z" i. p' P9 }這條問題，貼落吹水版，名副其實
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% w' Z' N: H! l! v, }4 f! |[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]