| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎: i) [% x& Y2 c

0 u  a, s8 `! w9 V(x - a) = x - a. d3 U- D3 w. g: ?& _* w
(x - a) (x - b) = x^2 – ax – bx + ab8 R4 Y+ x- G" J$ ^) A$ s/ |
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
5 e! b  P9 v+ u(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: M1 R  r1 p6 I' V  \; B
如此種推，
/ h; @' Y5 t9 v! L% u# o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???- ^2 G9 a  x, d. P( J6 i2 Z) H
/ U3 N7 y4 t0 t4 H7 \; R
[ 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 I* i- c, |, A& i0 y

Originally posted by Triangel at 2007-4-18 01:26 PM:6 x+ s- Y$ F  }- n8 G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- S8 Y- K: {( b/ T5 S- }

* n* o" M+ m; c  q0 F; T

1 k/ _" T2 Z) K3 x2 S+ ]7 n8 w( _4 p, ~# O( M, ]4 t" X+ }
[ 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:, Y  o" D+ J0 l: Y$ r
咁難既=.="9 x6 c6 r9 [" m- T8 n

/ H/ {/ K. c+ y  N6 O4 L[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

& Q3 V2 @6 O6 }* ^$ I0 ]8 X

( \3 a3 J) F! ?- X9 FThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
. o% }% K$ o7 n( z% l: ?第一個答中有獎- }3 {; k6 @) I: u# P6 i
+ O$ M. X) d: P7 l5 S
(x - ...

+ H6 Z& z( d* F6 M6 Z4 ?* H+ s6 h3 ?2 R
(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 D- z1 E- ^0 m5 E4 T& S' J' x1 i! x  n

9 e& W( s/ X$ `8 b" f(x-x)= 0 ，所以答案係0，is it?

1 F  ]- T8 D' T6 ?* A: y! c

$ ]& Q/ K. w$ v( f! g' F/ p) _! |6 M
唔似a.math題+ ?; v4 I$ s+ p7 ~8 J
似IQ題=.=
8 o  ?* z' \' X; Q
- J! k# W1 l2 s. v[ 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:
$ G' I/ S1 F3 X: @: F+ A$ n6 |1 U
' W9 ]* c' @" w' g& r4 P! k8 U- E+ _. s! Y3 _$ Q: p' }
(x-x)= 0 ，所以答案係0，is it?

( L; m& l) u: |# v- Y9 l3 d* @
7 c* A; p) x- t& g! L- n7 S
Bingo~

waikong

我係學校個學生會單張見過2 r7 Z8 {2 S! R1 o$ [8 m
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........./ e* V2 B& T" D  T
; q9 |. h. l3 m
這條問題，貼落吹水版，名副其實
7 m7 r8 o$ Q# [" Y& {9 M5 g$ M7 O: w& o
[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]