| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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- M% i- @7 s* y; m- P(x - a) = x - a
5 }/ ]7 A" N- y/ z. D* D8 f- s8 X! \(x - a) (x - b) = x^2 – ax – bx + ab7 Y% Z1 u& L2 e' D6 {; n' ?& m9 e8 J
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 q- ?) b, @5 C  w(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd5 K/ [7 v3 l$ A4 m9 {  m
如此種推，7 l1 `; v/ }! p  @
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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# H) F# d8 `2 b# b[ 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/ I& h0 E( Z; e  F

Originally posted by Triangel at 2007-4-18 01:26 PM:
4 S1 |, F0 v  R8 O; R2 Y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc9 x. ]. o( H% Y2 }3 |' S
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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:( E! o3 z* P/ P& J* b4 h1 r
咁難既=.="
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/ ]7 j$ K" c& \" k& s( @& T8 ]) Q[ 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:. Y! Z) S$ J- t) |
第一個答中有獎
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2 q1 Q' S( s% {- E% G6 {/ e: m(x - ...

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6 `/ @0 O1 h) ^; D7 G: E$ \. c(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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2 Z/ I% R, ^. O& r) i( l唔似a.math題7 w" z! B4 g6 w* f  m: |
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:0 n+ y' x& E: d7 r2 O, T
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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
8 k8 J& N. m3 a4 l. ]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
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9 x* h, }3 M: k' F! d$ @[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]