| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ U: D6 P2 _9 b1 o& g! l

6 m7 p- B, W5 L7 U; X(x - a) = x - a( d3 C& |/ p5 X  k2 t3 f- ]
(x - a) (x - b) = x^2 – ax – bx + ab2 f! O. l5 g% G6 S% C" E5 @1 A+ ]
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc+ z; P) e* H2 H  `5 ]  Y
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: d6 H, J4 k0 Y6 q$ [9 z8 n
如此種推，
, ]4 l: Y) \2 X+ s8 X6 f(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ Z* I" O) ~& X7 o5 U3 n1 H# H0 q

) n) r9 ]- L' z2 {! G, ?: _3 }- [  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
+ U. M  f7 C. v8 I, s% O7 j

Originally posted by Triangel at 2007-4-18 01:26 PM:1 C( R8 a. \  k" [$ y* d
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc# M4 }1 _  y, G5 ?, I0 ~+ x" V
, `# G  L9 c, [& Z. ?

$ A' d. ?( f/ L% J# S

2 r: H& w8 k( \) `8 s7 ^0 A[ 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 {, G6 v2 C2 y+ _1 W! E
咁難既=.="
  P6 o( A, S. D  D& z# A7 x( q1 X
; a% {& A) j* v# l[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

- e$ z  y2 M% D- `  K" K% c! l4 a+ A# [9 Y
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:" Y; g9 ^& H+ k% ], ]# k0 o7 y( n# B
第一個答中有獎
' j! e1 K5 R' p- d- }! E1 ?
8 x" a  w) h% a6 ^& v; _5 J/ t(x - ...

6 y$ m, I+ E) |, v- B. h( _+ \' g  X" N0 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:
3 j0 _, ?+ U5 ~
& [5 Z/ l* p9 B# T5 c8 j* u; X! t- _" r$ S* p  \5 K
(x-x)= 0 ，所以答案係0，is it?

& e" s: ^% j1 l6 D4 |0 l
; s0 L, y3 j% C) Q

2 |: [) x, l" |' c, Q唔似a.math題
$ H0 ~/ y1 ?0 U6 e! V  }; @& b似IQ題=.=) h: E1 [# J9 k$ ]+ K* I3 p+ `9 Z

. H$ ^- f% \4 V, b[ 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:4 k+ g- D2 U: _5 _
% @5 S( k6 H, b% h/ q5 e

5 z" Z) l) D: W8 h7 ^: B  s(x-x)= 0 ，所以答案係0，is it?

: k& N/ D; Z- |# }- L+ E# V
+ \; K& X2 |& L+ ~6 \Bingo~

waikong

我係學校個學生會單張見過, F7 v0 V( F# z7 i: M+ z4 ~  ~
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.........$ y( J& j  g% `- s; V% G
  D/ o* l: U8 T+ Q  ?: }
這條問題，貼落吹水版，名副其實
8 M1 }$ U. [( ^1 u4 O$ A0 N2 r- A- V! Y8 b8 H8 S
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]