| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎9 M. `3 q  b6 c, w* ]% S% }6 O

+ K* j+ n) Z! H8 u9 d(x - a) = x - a
, ?3 r5 k$ y) R(x - a) (x - b) = x^2 – ax – bx + ab
. w$ ]& c* t0 l- I6 S6 s# r(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
' {: F& V  i6 e(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; r& K* U# {1 a# ^
如此種推，3 }  l1 i; S$ a; l4 N) _+ Y8 ^: k
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& R5 T$ u! i0 V3 G9 R) C$ J! \7 f

1 _  M* a# ^5 D8 j[ 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
$ m3 _, }6 w0 J$ v

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 S* [+ F! J6 p5 r: o$ J+ v(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
9 j+ |) q) N3 ]: M5 q* ]9 c
" p7 x" T, @# ~3 U, q9 J

& _  o3 g' `- n. G- v

* ]7 K& A, ?; }; ~+ |" i  V[ 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:6 M% V+ N  g$ }
咁難既=.="
1 Y# O$ E1 {- m2 m; _6 c
9 |/ n" f9 o/ j+ G4 N2 U2 K1 A[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

/ g" I# H& e0 h

- r, P7 \7 R6 `9 J1 b/ qThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
; a9 ?0 ~- P6 C. k2 ]第一個答中有獎
$ V* R; n$ F, N  C& W7 W
5 ^+ r: x& H3 e" h7 _2 d(x - ...

% l6 i( K: D4 c! L  d
& W! R8 {% H4 Q8 e# h- j
(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: N  P, t2 ]! E3 d) ?  t. }& Z) l  x8 D6 K
# t: ]: ]- H, B0 ]. H- X  x+ `
(x-x)= 0 ，所以答案係0，is it?

2 W. F  Y. J+ i. _( [) m6 z) e; D/ I

! M; J2 H) D4 L2 T" M1 d& Z  W' f" }
唔似a.math題
8 B. B! ]8 o& a) E! H7 m0 Q似IQ題=.=
5 k4 A: M& W# @
9 N3 @% U6 P- c* X% Q2 m# w[ 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:6 F8 C/ c( K/ I; V
5 p1 L% X" C# ~8 p0 Z' ^) r8 X

+ x0 R3 ]; T; a" p(x-x)= 0 ，所以答案係0，is it?

$ m1 D- c: O. `
8 }1 N; K& F2 L. H
Bingo~

waikong

我係學校個學生會單張見過
" V" ~$ F& m7 ^, z# Q! F0 @5 l% K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.........
% N) E* `: R7 C9 S% H2 l* h8 L" z# r# }( D6 A
這條問題，貼落吹水版，名副其實3 R4 j: b: |5 n* S; c
" e/ L. ~2 F  F. p$ J5 d0 N
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]