| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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1 }  [; M5 y) _6 |, S(x - a) = x - a
3 q( d1 n1 p" B0 f(x - a) (x - b) = x^2 – ax – bx + ab
/ o; ^) h6 f4 t6 s0 e! g" R) Q1 Y) O(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc% u" n5 a1 d' K: v; ^1 Z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd( b4 p, P1 @3 `# T+ [
如此種推，
$ L3 b0 K% h2 `! v7 {$ C! `(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???7 i4 w* h& \8 s3 n8 i) `. c  L# R

$ n4 j4 Z) i  X1 e; t[ 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3 f8 H$ e8 ^/ d, t

Originally posted by Triangel at 2007-4-18 01:26 PM:3 X1 g0 @3 L! o! }' J
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc/ U/ W/ n* J+ n+ O+ `6 U& f

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9 |% q& o$ H' P' j" C& c. _' w$ g[ 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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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& \7 e, \8 c0 o, oThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
& G3 V; }1 u- ^! I$ O; g第一個答中有獎4 A1 ~/ X9 m+ d3 \- D$ Q2 D$ i& ?2 ^
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(x - ...

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" l. F/ `' p8 \2 J' @3 N& s(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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. W9 D* Y8 w' w' t3 f$ ~(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題6 Q0 n! P0 Y6 p  F
似IQ題=.=, Q7 f. _0 g: B: l+ E

% E& B2 k7 _, i& ^' h0 _[ 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:. ?! q+ a0 @* M3 C2 r6 y

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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
% m8 x* l3 R9 P& e- L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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& R* a1 Z7 q- A; n) m這條問題，貼落吹水版，名副其實( s& a" k; Z" E! a( Y7 |

6 g/ e6 Q# a2 |[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]