| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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3 ^" x/ M- m5 P(x - a) = x - a8 N7 C" z2 V$ U/ _& k& Z" G
(x - a) (x - b) = x^2 – ax – bx + ab2 d  U! ]3 [' R* d& o% {
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" U( P. J5 P3 f! d
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 n0 `/ I) Q1 P  G
如此種推，; d- B$ e& `' F, H3 p- D1 m% l
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???) z/ J2 t# j2 J5 C/ f, B1 [
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:/ k( Y) `" H! p* I+ P
(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:
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  |9 ^1 v3 A/ }/ a7 s[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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2 _/ f& x& N9 |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:7 I, j: t+ u% m% ~& y
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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(x-x)= 0 ，所以答案係0，is it?

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+ t( `$ F/ z* g0 E' y- _唔似a.math題) D3 X# }* w7 c1 I$ j8 Q- l/ p- e
似IQ題=.=3 x- J1 _% Z$ U2 v% y0 K0 I
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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:% N& F0 \( w! Q, C# B" ]8 u8 `$ c( b
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1 |  J6 D4 Z5 N8 ?% ~$ A/ T(x-x)= 0 ，所以答案係0，is it?

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; `% R% `1 e7 y3 w; _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
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]