| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎6 M, z8 z7 b. C
( N6 ?( {# G% r( p
(x - a) = x - a
7 A- q, Y: b$ s/ X2 S% ^(x - a) (x - b) = x^2 – ax – bx + ab' R9 }! u$ @5 ^% y- a5 O* P
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
0 h" w1 k8 v3 }(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd( J& [/ X# \3 T( b
如此種推，
& L$ H; Y  Y. a1 C(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
/ n$ P$ A) }' u" c7 z8 c! w$ R4 N, W( t  |% W+ K
[ 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2 x$ t8 D, z' c% ~9 }; _5 q% G* S" J

Originally posted by Triangel at 2007-4-18 01:26 PM:/ v8 h" B) P( O) D4 j8 z
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
7 O" p! v0 q. @7 w" c  K1 f+ R, J# A. U1 d

6 c2 D  u+ B& j6 I$ c
# d' K5 a- C) [' o[ 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:
; A5 s( u9 b* V. t/ F$ K2 ]咁難既=.="6 ]( c: N- e' w3 v1 {

; I+ D/ F4 a- i[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

% H# p8 n. \* n5 [# ?, X

- s8 C0 M# F9 dThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 Z- V6 z8 [9 y/ }. \7 r第一個答中有獎" ]2 S% Z1 ~8 v7 `

$ t# N+ d3 s$ e. j/ R& D(x - ...

; i/ \+ F8 O6 x$ Q0 [0 X$ D, G9 }6 U4 x: E0 @' B$ D4 _5 w
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:& T1 m8 Q0 m% A9 K  Y: G# |
+ J+ O. n7 C& t! w0 x

$ i/ Q$ X, h- L' c4 n(x-x)= 0 ，所以答案係0，is it?

, _. a* x1 x* ?$ @6 d6 j' k5 `3 ?
' N! s1 U+ F( q# R4 x3 G$ O5 ~( \

8 a8 f8 z" |2 m1 j$ Y唔似a.math題
: ]0 p/ c" C+ i( v( N* e似IQ題=.=
. A$ z0 g9 u4 O5 }! \) d: }$ x
* K( _2 s4 j3 o[ 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:. I9 G5 G0 H) w; k
; [1 z, O- ]* Z$ o3 X/ W

+ g* v2 H) J) m(x-x)= 0 ，所以答案係0，is it?

2 J/ X+ b; |* L3 b8 {% ?
- b: ]- U! }) k7 n; ~4 H* UBingo~

waikong

我係學校個學生會單張見過$ @! c; _, b1 E
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.........1 n! x9 h6 j1 g# q& h# ?
# Q" U* o: x6 b: T5 V
這條問題，貼落吹水版，名副其實
! j/ r" Y! I. V: v& y0 `, |- P+ V8 S0 T4 F. E; ^( T4 U/ K
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]