| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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) n* l6 U( R( c2 ]5 E(x - a) = x - a0 s+ a4 o( o& t& O; f2 B) A5 c7 x
(x - a) (x - b) = x^2 – ax – bx + ab
2 F" {5 ]' y; T3 N& Y) K( x(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc6 x8 I3 S  X, M7 @" _0 l5 }
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
, j+ V, ~$ \3 y! h9 i* a  ~如此種推，
# q" ^" S! j) H  O6 g- h) U3 m# V: s(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???4 ]5 E% |2 A. Y/ g1 C* N
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:* T! B1 F) A$ [( X2 R  Z% I
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc; J  \( _' c+ w/ b# \" \3 I
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5 [* I( p# T4 d. m[ 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:
% \* s3 i# h; A; v+ ^' D' e  ]咁難既=.="0 }  F, p3 l0 z& O3 ]

* s' e$ n' O8 I( X  L0 c+ g4 F[ 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:
$ i* J' G; m/ k% R% `( T第一個答中有獎' S, |% E$ \. M/ z* Z

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! v2 l( q" w. _0 e/ k4 Y(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:8 k1 b8 d  d& n% Z& R1 G' ^
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: p# U6 b- a8 G0 f9 w(x-x)= 0 ，所以答案係0，is it?

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  Y! i) c  T5 v" \+ x+ G" V唔似a.math題; n6 f( z4 |# L1 y! [4 D( g1 v* @1 r3 V
似IQ題=.=" |, L) e0 p3 L6 j( {; C3 d8 L" A

# f6 g! Q$ z# T2 N[ 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8 ]1 q4 K2 K) A, E2 Y2 V- ]
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.........5 [0 _) g1 g0 m. y) W
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這條問題，貼落吹水版，名副其實
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, u; Q& E0 L3 w1 f. [& f# {+ I[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]