| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎7 J3 b5 S6 U# n- p  m) Q2 O

7 _! O* G% b! P; j9 S(x - a) = x - a" Y' _# m4 R0 [
(x - a) (x - b) = x^2 – ax – bx + ab
1 _7 ~! D/ G. b/ z! U: F1 n7 c(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" l$ c% e5 O0 r3 m. t+ a
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
" ]& z% A+ A4 y2 \" F- I如此種推，
! ~( z. V4 |' ]4 p7 I. @/ y6 r- r(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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) X0 p/ E, l3 }6 r

Originally posted by Triangel at 2007-4-18 01:26 PM:  l& B4 ^) U1 N" d2 d' E
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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[ 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:
- K  M$ u1 g+ W$ z' v2 U咁難既=.="* G" A1 @$ X. s

0 H  P5 J* L  k: o[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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4 C: x/ {2 n; K) pThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ n: W# y( q) h/ d3 z2 w第一個答中有獎+ _! N: [: v& I4 C2 P5 V
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
! r0 ]& P5 j9 o1 V  j9 l" {
2 i2 K9 @: A9 a) V) K" {
+ a+ j8 s2 @1 M4 n4 \(x-x)= 0 ，所以答案係0，is it?

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5 ^8 {+ f/ N9 d; k+ U+ [6 O
5 U: _7 z1 |8 v7 e  ~1 B( G唔似a.math題
( [0 \# H$ L+ P+ Y* {2 ^似IQ題=.=& J$ a+ b  R, \# y7 w3 T- ^* i2 K

& d5 e1 K% f: @* r[ 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:% H- \- y- T. _- v* j

( A. Q5 ~9 w' ]/ k" X( g, j- n" q3 J" a( j, J0 U5 B
(x-x)= 0 ，所以答案係0，is it?

+ J: {/ N9 @6 v( i' i6 x3 U2 E

# J1 v0 j2 Q* a, U, L( D5 NBingo~

waikong

我係學校個學生會單張見過8 a* _* Z' F% V* d# k6 u  t- d2 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.........; k% W4 r2 R! d) C+ O7 E. X  U

" ~( h; }$ r. d9 o這條問題，貼落吹水版，名副其實  l, m* B( ^% a

! ~5 o' f* L( N/ C$ ~[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]