| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎3 @; o. ?* q( Z) J- Y( w

  c8 v3 S# p2 f% d' s, K$ ](x - a) = x - a% ?* N+ f& h$ F% R" B
(x - a) (x - b) = x^2 – ax – bx + ab
( V1 c8 C" A* a* n( ?6 I. m(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc. \6 r2 Y9 O) ]1 h8 }6 l' P
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! q4 x: K. h( j) v
如此種推，
5 J6 o' V4 H) h% D3 j* O" o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
2 S' ?0 r; v6 h$ x# D8 D' \; K: l4 r0 t8 u4 K7 c
[ 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8 |- g+ z9 X. J6 o3 c# N4 x; c0 X# u

Originally posted by Triangel at 2007-4-18 01:26 PM:$ Q1 a  B. [3 Z1 {3 n- i1 s' o- ~
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
; N6 ]; i3 N* Q4 Y
5 H. ^7 s) Y) @! Q% A6 g

7 G$ D. E. H$ _+ d

9 k3 Q2 h+ [" S4 q7 R[ 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:: h2 R' ^; p/ y  f! M# s
咁難既=.="$ W& e' l) k; N6 u4 s! d
2 ^: c. j' p( ^( x9 @
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

5 ~! V  w8 `  b* y! c& c  P% Q
' d4 o1 M& i/ x1 V* ]1 u
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 x5 t7 [, j; i* H$ ?第一個答中有獎# `) L, b7 k( C  A

' x! `& Y. v7 B! _7 d. H(x - ...

5 c% Q0 J' ]2 s7 V; ~
1 g. e+ q# z- V2 h" c4 j+ G(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
/ r* S  [0 A/ s$ N: B6 A/ h* _# l6 l. P( _2 R; z' M

* i. }7 o0 l: W+ M) P* b(x-x)= 0 ，所以答案係0，is it?

0 w) n- U1 l  Y- i& {5 c8 y6 e
& c( y" `* J8 `8 T( t

- ~- m7 d1 O" H1 `. |9 H) R唔似a.math題9 ?: S" D* _" w1 b( B' n! U
似IQ題=.=
9 _( i7 P! j0 n: N0 N1 e
) e% ?! P0 H+ z! n" M, \4 }. 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:
) h# a- G. `, G% N9 K: c; F
! c* @* v" E! N$ u6 l/ V; T7 R3 V- Z% B: K8 Y. W3 X: y
(x-x)= 0 ，所以答案係0，is it?

7 P# h, E4 L9 j! S3 N( \3 S! \5 n+ C
+ M5 G5 ?6 n" x: z* m. [! c1 j8 r
Bingo~

waikong

我係學校個學生會單張見過+ Y5 V) V* }) ^1 I
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.........- r1 e' n' K! q0 u0 K; z
+ W1 P$ Z& ~' {9 \9 Z
這條問題，貼落吹水版，名副其實
- _) D. F, e1 v3 @) H$ ~' Z% z# f9 `1 N) G
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]