| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎% K4 }5 l& S& r. d
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(x - a) = x - a
* C# i  u4 p+ S(x - a) (x - b) = x^2 – ax – bx + ab
, u+ Q7 M3 {( K' i: m, R, Q( [(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
& W( h% Y5 W. w3 w1 Z! A  {(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd8 C3 p# C/ T3 L0 y0 P
如此種推，
; [' M- }. x. E' L(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???0 J) L) y5 c1 w" L; G; z% b' i
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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: N0 x) s# P( i+ `9 o

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 Y! e& }( u- C0 ~" g(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:' p& b8 D4 ]$ |* g/ O. t1 G0 S
咁難既=.="
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- G9 m- ~+ ^. }8 M[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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0 Q1 T3 E$ S& I1 J& SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
% ?7 W& L2 B  U$ @) s第一個答中有獎/ V$ O+ G0 A9 ?* m3 a, m

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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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- B- k1 D' j& a( Y! t/ R, g(x-x)= 0 ，所以答案係0，is it?

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# e# f" R: c& F, R唔似a.math題/ o5 e( G9 d* D* f1 r* w; r
似IQ題=.=0 n2 Q% K& Q3 y. Q7 z( q3 @
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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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3 W& m% l1 P! I: h. nBingo~

waikong

我係學校個學生會單張見過$ j8 M# k' ~8 S! z* |  x
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.........' r# [/ N* o. r, `8 N
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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 ]