| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎5 z$ f" C* G! k4 Q' \5 G  i
: u3 z1 `7 k1 y0 P# p
(x - a) = x - a
& X' w$ T$ l1 _: m( G(x - a) (x - b) = x^2 – ax – bx + ab4 b' A9 k$ l. r5 a% w) L! w
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" I1 C6 L0 E3 ~4 n(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ |0 f7 C4 f9 V( I1 G
如此種推，6 `6 L/ ]" S+ O; w0 u
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
# }( D' M0 p% X. s8 z
' w! K  m* y6 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6 F0 U" \) F4 D! S' j

Originally posted by Triangel at 2007-4-18 01:26 PM:- ^) Z( O. q! M
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
0 D+ E! E! |& o, |6 W! V  N  f# d' ]" [4 W% X" i

9 u5 p# j6 O/ O; o' N/ c9 @/ d: E+ w
[ 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:. D( O  n; y6 M. e
咁難既=.="5 c5 L0 R/ w5 G4 B2 S
3 h, p: Z$ g5 M, G! U: a
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

( e8 h" J: g4 ?. r4 X: m8 `0 T& {+ o3 w/ f+ X" I! }% J1 n
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 H: Z, j! h% k4 a第一個答中有獎8 N% L! }2 ^% k' a3 Z3 X8 b

# F/ m5 W5 t- @# S5 i5 J(x - ...

9 F1 s$ \. X# w& N
: e, Z$ r% p  ^6 Y(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:8 I3 {2 i$ i) R1 ~

( d/ y6 g& s, T( ~; |: N
* B& ?4 Z( B! {1 L3 V5 G(x-x)= 0 ，所以答案係0，is it?

7 k! U4 l* m  s2 v

% d3 n( h* l! b9 g! q1 Z% x" s4 S" I
唔似a.math題
" @( {) Y& x$ I4 T似IQ題=.=; L. _' g. x) _. k5 f5 U
2 l  G; z3 O; t( o4 X
[ 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:
8 t" W, a; [) p5 @) g9 ^* r8 z2 d) T- X. G& s2 f
* ?- {( v, Z1 m6 `1 e9 K
(x-x)= 0 ，所以答案係0，is it?

2 W( H, z0 w$ s' m/ r* B0 J( I3 H) q
Bingo~

waikong

我係學校個學生會單張見過
- l% @8 V5 U% n5 r, T0 X+ E, r5 D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.........$ p0 `, y1 v5 U* H" O1 a" ~; ~
0 Q4 v1 l' W+ p1 n+ e% n; [, h, I
這條問題，貼落吹水版，名副其實% U3 M, ~# H& V
, H$ B7 O4 e/ d% W
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]