| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
4 X4 k8 k) ^- ]0 s
0 V; L& L1 m! b4 }" Q(x - a) = x - a3 d+ C+ [" j& r3 ^: \
(x - a) (x - b) = x^2 – ax – bx + ab+ ~' o' s6 ]3 d5 ]2 w; E
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
* J$ I# `, C) N7 h( _" H# ?$ o' C(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd. e: e9 J2 I' s+ C( S& H: D
如此種推，
. X5 I" j! ~4 y(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ k9 D* h2 h. Z% R( n

. b& ^' S  c( @9 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/ E8 l) [% [+ D8 G* Q- O1 v

Originally posted by Triangel at 2007-4-18 01:26 PM:' f  ^  Z. i! d; g7 D- u3 s0 r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
( }/ A: `/ X/ g$ x( p( _5 [9 H  S& D$ ]

" [, n- w3 D$ w* k# v$ t: l- W1 P
9 o4 [8 K1 {" y, H4 \* 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:
/ P/ i7 I9 N7 n: p5 a5 Q- j2 A1 b咁難既=.="7 R! ]. n) H  L" y. d

* X* b5 p! |: T* [+ B/ Q[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

4 ]/ Y& B2 }6 B0 h0 \2 {2 ]! M
) M3 x) v3 P& c3 H5 }
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
! ~" t* p6 ~- `第一個答中有獎/ o0 K2 }$ O; ^7 [1 s+ H8 ^

/ R$ V' ~" a% i3 i/ I0 [(x - ...

" E! P3 R! X0 d' Z- M3 S
; Z9 u0 F0 ~  V; ]$ U8 z
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
) W+ o7 Q0 f! z
' K& D" m" E6 A: v$ C% ^6 M
# _. r3 m( Y! Q1 k6 r' j(x-x)= 0 ，所以答案係0，is it?

6 L: F4 ~. k. f1 O2 I7 Y9 x
% i0 O: w. X/ T$ k1 ]8 k9 c  M- U8 @
0 k! Y. b: H( J唔似a.math題. g! ?3 ]/ L2 s8 s! U5 M8 R7 Y
似IQ題=.=5 u- o+ Y! i+ R

/ S- N; k* D/ R! K% y[ 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:
; P1 q3 o/ J& n. k3 s( t! s: T  x- E) |

/ G+ |( o* Z9 y; V3 B. X(x-x)= 0 ，所以答案係0，is it?

4 u3 D8 I4 m. \) A& g1 {

% i/ D! h  z, y) G" H0 @Bingo~

waikong

我係學校個學生會單張見過
$ U: t6 L7 O+ _6 H8 o2 `; _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.........4 n& ~: w$ i0 m7 c/ \* e" z

( |0 Q2 ^$ d- R這條問題，貼落吹水版，名副其實
5 s. Z' n7 C. Q: Z5 d3 u- L
  l( a3 g4 v5 s0 G! g, z9 T0 R[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]