| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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# a2 i2 G! f9 X' W3 x(x - a) = x - a, t: y& w' w+ r
(x - a) (x - b) = x^2 – ax – bx + ab- Y) }, q( I" v# H& F
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
2 z7 J: `, k- p$ f% S, E(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
6 N# o( |8 z9 Z$ l/ t. @如此種推，
$ `( c  W7 f; b8 X% M(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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3 x' g  B/ h1 M; ]9 @- X& @[ 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 Q" D7 w7 n; V1 [% _

Originally posted by Triangel at 2007-4-18 01:26 PM:  M* B9 G- w: X& K+ y& p
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc/ [% {& K# u- p1 a4 {2 T! Z  Z

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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:
7 i# R# e- P+ V, ]8 }) V* u咁難既=.="
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$ N* L- e' C7 _5 O( t+ {; f[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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4 r' p1 l6 i' t2 `& }/ DThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
" H) B. ~8 q! l& o* Y3 O# w第一個答中有獎
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(x - ...

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1 i3 F3 {8 I" A' i( \  a(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:+ }% b4 f& u& s$ c' G

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(x-x)= 0 ，所以答案係0，is it?

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' `7 _! z/ J/ i& h唔似a.math題7 Z* h8 V2 b7 G9 F- t
似IQ題=.=4 n4 A0 @1 n6 l

. {$ k& N+ {7 K2 P1 U  }[ 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:: x* B) g  ^1 w: ?8 g

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(x-x)= 0 ，所以答案係0，is it?

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5 ?1 |- w/ }& a! P: @1 gBingo~

waikong

我係學校個學生會單張見過. a& d. G& J3 m, D6 R1 A7 L0 F
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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8 ^5 b& h3 r% S4 u這條問題，貼落吹水版，名副其實" F5 _5 ?" Z* p) `$ h
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]