| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎3 E% m7 T1 u  G  V& Q
1 C; O. T- A0 K% c% p! c
(x - a) = x - a
) `. W/ \/ N, W0 L! `(x - a) (x - b) = x^2 – ax – bx + ab
6 w% F5 x9 a0 |( N4 F' q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ ^( M& F9 I8 T' {; F: Y) n(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 @* k3 P  `3 Y: T+ a* p
如此種推，$ N$ M$ i: M4 `8 b
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
& V2 `$ p3 o  D& z% l
, S+ B/ I5 ^* Q4 d[ 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
. n: i& ^- M6 O2 N# {

Originally posted by Triangel at 2007-4-18 01:26 PM:/ b; F* b- e' o' b" ]; b4 Y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
  l$ h$ v- W9 X2 n# }
  w7 R/ I1 c2 |3 p0 |

* k/ C  ?# Z" B' q
$ }" S& V! e' W) h[ 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:
2 B6 Y" _9 Z0 y2 D咁難既=.="" L0 N; ?& p' Z" T! j# y

3 p( t% E) O1 y% T0 |) ^# c2 E[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

1 P( \; ^+ }; p7 y
: Y) V1 F$ r' [+ f' ?0 I0 @; u
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
' ~% j5 J* N& _$ T& w第一個答中有獎
+ n4 ?0 g: {9 T& |2 f$ F$ @
. h& M  x/ h& q* Q! P. N  E(x - ...

+ R' K; c2 p2 R5 H
# j: \4 }7 u) ?! l! b3 y0 e
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
' @5 v, H0 r* C; p, F. ~+ ]4 H) P7 r* `0 U) w5 L9 P
- @9 ?2 _) O- t0 N8 M5 H! T
(x-x)= 0 ，所以答案係0，is it?

/ d  _2 L, X; b* x- P! F
0 [- f- }  v: U( @( q8 P
0 f- t1 |( O- E, e3 h+ E' D唔似a.math題2 J1 g& _8 \& W; C3 Z; @
似IQ題=.=& n( i5 E& y+ A- @

6 \& C* {* p/ n* r/ W4 `: D% t* 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:" D/ Y* K" U. Z

0 M+ J' ]4 D& ?
, b! D8 l+ ~' x! f8 w0 U(x-x)= 0 ，所以答案係0，is it?

/ }  P+ E9 y* j. Q9 T  X4 H1 Y& a6 M! s2 P6 {4 m
Bingo~

waikong

我係學校個學生會單張見過; o# {3 V2 H6 m, W6 {
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.........( I) h3 s6 f  h$ m6 G% V0 ~

% q$ L, f2 U/ _9 S! X這條問題，貼落吹水版，名副其實
- _9 v  P# I2 _$ e9 n  ?7 x7 j2 |+ A! t5 y- _% l  I6 B9 X
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]