| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎8 P7 D7 |* K" D5 P& u5 t- s0 B
  {* s  c9 o/ \; ?2 e$ H. t$ ?
(x - a) = x - a
; t4 e; ]5 {  U. }1 V" f(x - a) (x - b) = x^2 – ax – bx + ab
) F; P! e- u2 S(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
9 k% G, ?" A" w, h(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
7 o) e# S9 M" l8 N+ z2 {如此種推，6 K% l% y# C. Q) |
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???. V, Q; K( J8 r) t* }0 P

# d; m5 v) n2 Q3 y7 s- d6 Z[ 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* I2 b! N2 z' @' w! D( u/ X

Originally posted by Triangel at 2007-4-18 01:26 PM:
: p, w* z% J0 |/ k(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
# J- R$ l9 I2 Y" t6 X  D
. b, a- l8 i. ^

( g0 n4 S2 W4 t( O1 h

- L5 D! ]3 u7 E! S[ 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:6 U, j/ O: T+ b1 n- l( Y8 l
咁難既=.="
6 y$ D0 t0 L- F" \
, K' p+ i4 ]( ~; |' h* M$ s: S[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

+ o9 `& G$ }" J1 O! i2 I7 Q2 g: {/ R. g6 B- ~. }
Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:3 X! E; A  f" k8 Q  p! {
第一個答中有獎
( F/ H$ k) M5 h* P; m: |
  U+ `& ^$ o0 b+ t: v/ `. {(x - ...

0 r: }# `( c1 `( o+ c, Y: g+ D! Z
& d* m. U' o- b5 f
(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:: m. \( ~& S3 B0 H% _7 r
  h* V7 ?- S+ Q$ J( O

4 J" F7 T3 v3 i( r) U; }1 X(x-x)= 0 ，所以答案係0，is it?

0 K$ b( X6 B2 ?! X" a* f8 \( T
; y& j! N7 x3 ~5 `7 r
3 _5 B6 A" D, X1 b2 J
唔似a.math題3 `$ u, d+ J6 J) l  F. ^2 E; L7 M
似IQ題=.=
6 J- w# K! k* u
5 b6 W/ I# X; t0 W" Y[ 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:
3 I0 }8 d, J" w) E, P
2 J( a* `. w4 f; Q" G8 c5 G0 }* v, d9 y  Z; f, }
(x-x)= 0 ，所以答案係0，is it?

2 p; V+ L* h' H9 C6 q0 W& t- a# L7 q+ u/ k$ q( ^
Bingo~

waikong

我係學校個學生會單張見過
* s3 ]0 c) {% d- D6 p& u. F4 g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.........
2 ^. Q+ U% \4 Z5 l" k; M6 L
% k# z( D- j' k這條問題，貼落吹水版，名副其實
1 \% J9 y) Y4 o/ l* `3 [
4 ^9 F1 b% e! I$ s[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]