| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎* x# s. H! o; {' Z. G. }8 e
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(x - a) = x - a# u# Z  @" ?/ ?! H. t
(x - a) (x - b) = x^2 – ax – bx + ab
5 h1 [! E1 W: L) P- Q! N9 y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc  J+ b; l4 z; R% y9 K8 z2 o
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd) B% d6 G& s( M: P% h( @# `% g- J
如此種推，
5 k' M( m( ]  p+ M* w, [- q7 }1 i& z(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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4 {% _/ o; M# b8 l( ~[ 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) K6 P+ i% A5 l9 C

Originally posted by Triangel at 2007-4-18 01:26 PM:
- r0 v6 A1 ^6 w4 F6 k(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* [5 x# C9 Z8 d. q/ J' h8 \: a4 @

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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:# @0 h1 e5 e/ [% `, {  i* P8 K
咁難既=.=". I0 O9 b, I  ]  S( T, e9 [

6 P% n1 w0 V6 `, ?/ f) s[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 S* N' H* y+ u' Z7 mThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ d8 p0 a2 F! E9 H- w& h0 w第一個答中有獎* A3 _. a$ G# n4 P+ i

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1 u# p+ W6 l- I" z" O2 s; L( E(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:, @4 \* F- d- Q; y2 s2 f
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# E5 I7 n  r* D6 `8 F(x-x)= 0 ，所以答案係0，is it?

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1 T+ s! B; S0 E$ ^唔似a.math題9 g3 V4 Q) r3 Y
似IQ題=.=
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[ 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:
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(x-x)= 0 ，所以答案係0，is it?

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4 e% h& u9 r! q# g0 r8 ^( L' l$ aBingo~

waikong

我係學校個學生會單張見過
4 c: @2 [8 p. q6 x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.........
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這條問題，貼落吹水版，名副其實' ~) B/ A) z  A7 `1 O' ?5 ?# U

# w9 V" ^4 H: Y& {% l# v) A# y[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]