| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
4 o* L. |! i9 p
% i( `& a. `7 n4 Z& k(x - a) = x - a) \4 H" Y( ~+ r  Q
(x - a) (x - b) = x^2 – ax – bx + ab
- U- y5 J8 }1 S0 W(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
5 b1 E' _1 ~/ W" a: e6 C5 A) W(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ I) \) }6 _% @: W. i8 S2 g, h
如此種推，
4 `) f% f5 q1 T; b, O(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
$ w# ^0 v* o0 T. U- H5 R) A  ?. N$ S2 C8 E1 X/ y! \' s3 y
[ 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/ F7 ^+ g; S- D  N

Originally posted by Triangel at 2007-4-18 01:26 PM:7 a0 P% o: {9 o6 p( I
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc  b8 R0 [- b; ]+ z7 [+ f

4 z6 _5 y' l2 W2 P2 O# @- ^

. r" h$ ?8 A; k' h% W
$ F+ u3 D# a. w. f0 L% o
[ 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:
: l3 y- [4 K6 {- Y. ?( ~+ B咁難既=.="
+ w- d8 {" r: g0 A' [, U6 a9 [9 k9 i9 C, i* V: u" T+ E1 L. C
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

2 }' p  p7 ^* V8 U1 J9 p  S/ S
" ]: W# f- R. V
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
% c6 z' p7 G- X& ^) e5 k6 q) `7 T第一個答中有獎/ x. ~0 O1 g0 J. b- B  v
1 t; z% H3 @4 u% w# E. S$ B
(x - ...

* \4 h1 n" i% k9 ^% ?# ~5 G
( }+ y! ^0 w& N. H8 S+ i- 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:# J; s/ ]: c8 Q6 g

0 U. w5 B8 }% M2 I3 G+ _9 i
- o! d) q3 R( M8 N+ d(x-x)= 0 ，所以答案係0，is it?

; e$ p! E- |. F( j. Q* i: n
2 k( v/ A; b. x! G8 N# o3 h+ w# `& x( a. k% j( K! x  Z* }# ?
唔似a.math題
: c0 c1 P' q9 @. m( I% a, P0 j似IQ題=.=
0 e2 s6 ^5 f$ K0 q% L9 T' g) z: L" H/ ^3 }
[ 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:
$ I0 `  a% L; v; ~' M  o+ W' \  g& I% b9 [; H  e* r& b$ N

3 X8 U9 |! E  L* Z$ I(x-x)= 0 ，所以答案係0，is it?

2 Q/ l1 C6 @" c% r! G0 _6 o
8 m% T$ V" t+ m  q6 W4 A+ Y+ {9 R& iBingo~

waikong

我係學校個學生會單張見過
2 B4 D4 ?/ ~! Y) d/ X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.........
8 A, h& a, i, t8 ^7 B2 p
4 L9 f! I" w( {3 U$ H' W' k  M這條問題，貼落吹水版，名副其實3 S( S* n* M, v+ o

0 O. t) B& i2 y- z; m[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]