| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a; d# h; r, [/ H8 O/ V% l) W
(x - a) (x - b) = x^2 – ax – bx + ab% ~+ [& A$ V( C6 U5 d: Z
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) T* Q/ D) f, i* |0 u8 e$ Q0 z, K8 Q(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 P: o" V! @. |2 V/ j+ }) _
如此種推，2 e0 I& V3 u& ?9 B: }  N0 B
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& m* r1 U- Z5 L" O" C

& u& Y. t# Y2 p6 Z. c9 X[ 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/ F9 X- n9 x4 [- V

Originally posted by Triangel at 2007-4-18 01:26 PM:
: l" P7 J$ D4 `& d! \- k* V(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc; @. Y% @4 w8 Z0 Z! @

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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:
' w" r/ y( E0 A咁難既=.="/ R" S+ K2 H0 @$ R
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 [1 I5 h. D$ r* s( aThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:/ k0 b( a0 R( j) o
第一個答中有獎/ E& S% f) {- O8 S3 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:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題0 }: `) Z  y; h7 m6 h( K
似IQ題=.=
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# J3 [% r1 f2 c8 Q* P, o  S[ 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:  G9 `2 A: K. w2 N

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(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過
5 T3 U( J( n& p& ~1 E* m! t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7 ], e) k" ]  |2 F0 f& w/ M6 V

* ]7 L% P7 B9 A8 i1 B$ o5 r[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]