| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
8 V. B! S. F1 X; E# k' m( B(x - a) (x - b) = x^2 – ax – bx + ab; a7 ?0 V% H. d9 k
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
9 r: @5 {$ y( E. x! C# v2 R(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
9 v; {, K' m2 }* j0 c如此種推，- `5 Y4 j8 y! A6 A7 v% D5 W
(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2 v4 H  c$ C* z  ~% t: W

Originally posted by Triangel at 2007-4-18 01:26 PM:  l& w) |4 ?3 o* M& E$ w
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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) O' O1 _6 X8 U& l[ 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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. s: V" _# I) c[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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0 H- y8 m+ Z7 C0 Q8 e) H/ `Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:% m* X! Y. n% ?" a% G3 V; k) X, p' P
第一個答中有獎) Z% d" U' }# n1 h8 O9 y

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) O) g4 @" U3 g+ C, w2 V% {) D- h(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:' o( `0 J! x  E8 N# n4 M

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- P5 Y$ K8 }) A# n(x-x)= 0 ，所以答案係0，is it?

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# P3 o& l( T0 M6 [  B唔似a.math題* ?8 e! f" K: x0 n3 c
似IQ題=.=; z2 k; N. N' m6 d- u4 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:
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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 r7 {8 ~7 \( f1 q" Z/ M
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+ C6 G8 i8 _) C, ]' E* K% {; r

) A; I: i7 d5 e# F+ M[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]