| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎7 R; \+ D6 M$ t5 N) E  I6 \
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(x - a) = x - a
: ?# ?/ a; U: C' c  A(x - a) (x - b) = x^2 – ax – bx + ab1 F2 G& _7 X, {6 R4 o) Z" t
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, A5 w7 X$ T- n5 I4 ~% }# p5 p  T" F
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" \) t5 X/ v4 ^7 j& V
如此種推，
( s- W2 N1 s7 S; i(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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. I  I7 ~1 A3 Z) S8 m* D/ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:6 G; C6 F/ D; Q0 n1 x9 ^# G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* h  y% b6 t+ N6 s' P2 q- K3 \

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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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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* }# T) P2 o( i! VThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ `% p4 ^! _9 {' ]第一個答中有獎
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(x - ...

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- U4 ]: Z2 A  `1 z(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:$ Z6 `; D7 R- Z  w9 W! S' ^  b

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(x-x)= 0 ，所以答案係0，is it?

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; ]+ B; z% F( t+ K/ }7 c9 S7 Y, `0 }唔似a.math題
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2 O, W9 z! _$ e[ 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:" g5 ^- h1 X& C/ b
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# I& n* L6 R0 n2 O' x9 p# b/ S$ d(x-x)= 0 ，所以答案係0，is it?

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7 ]3 G( ?+ I+ v1 _Bingo~

waikong

我係學校個學生會單張見過1 @6 {6 q. B" S" z& C' O- W
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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) P. m3 a: O# B這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]