| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
- r, d# K0 R2 T1 l( o8 E5 I% k(x - a) (x - b) = x^2 – ax – bx + ab) b* C' W% H8 F9 q" L" @
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
* w3 V) q/ z& v) _(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
( }2 Q( k2 H7 |6 [) q6 p如此種推，2 z1 f# m3 z( P3 }
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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) f' Y; w$ ^! D( C

Originally posted by Triangel at 2007-4-18 01:26 PM:
0 n' O8 x2 D4 H. n' X) l. h( X(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, k  k$ l. a" k

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: a  `8 j( e1 }' J; z; Y# Z6 T[ 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:
' u; \' J  v/ ^  v% e( p& s1 H咁難既=.="6 k, A* t0 r- i( {9 W6 M" e$ _
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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:
, H) n& T& L; z8 L8 {! r第一個答中有獎3 ~; Q9 B  B/ F) k

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$ g" n7 ?8 N& l5 K0 d/ c  X6 @(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:: {, J2 l3 W. r! F4 z2 |4 Z5 Y4 ]

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( d: N1 `9 u; I(x-x)= 0 ，所以答案係0，is it?

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$ [+ U" A5 P. u3 M7 b. Y! o, T唔似a.math題
: U; j, f  a0 ?- n  T! f' B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:
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(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過. J# j$ O  e7 R$ g1 U
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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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]