| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
5 v2 z  o1 a' N9 h( Z(x - a) (x - b) = x^2 – ax – bx + ab
& _: n/ r; ]8 s% T8 Z(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
$ p3 b* F0 u% M& j% P* k( T(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd) c5 ~, q' O% _$ p
如此種推，8 L9 T, o8 l" e, J# h1 ~
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ y4 ]$ u2 O0 U4 ^6 p  g
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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- v* d. M3 L  R0 J( s

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 x* L# ^& I& F8 {- d(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc) J& _6 c8 y! c# q

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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:4 ]0 ?8 K5 I7 B/ B
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
& s# u2 d4 W/ f4 E& M$ t第一個答中有獎
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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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! j7 B1 ?9 d! q+ p3 q/ |5 a4 `(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* X  T% Q* W. \8 k3 r! ^' E% B
似IQ題=.=! N  b( Y" f" Y
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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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Bingo~

waikong

我係學校個學生會單張見過
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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8 C$ K! L0 K% ^, _- L  N

6 ^- P! ]6 p: ]3 o7 z$ N[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]