| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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- b  @4 z2 A0 {$ ?, F(x - a) = x - a
4 h* g+ H( H" D3 [(x - a) (x - b) = x^2 – ax – bx + ab; N2 K& c( V. U: G, X' H6 ]" d
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc7 F# ~* ?; L' w9 C' r
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
% M+ j2 b7 J( z6 L: Y& {如此種推，
4 A+ _1 [2 _2 X4 h" i1 r9 Q# f(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???5 ^0 ~1 n6 S* w+ [* p

- [! D" k- W7 m: ^[ 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: L% W0 V: G" B$ `- n# \% d7 j

Originally posted by Triangel at 2007-4-18 01:26 PM:7 O0 ~' z1 F( _7 U
(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:* F9 ^# C. N2 Y- Q+ g- p7 U
咁難既=.="0 q2 I" c3 C5 D( K! G

2 ?% ~; O, ~, C) v8 U( {& i[ 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:( Y& u" ^/ c1 l; A9 |0 d2 a
第一個答中有獎
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(x - ...

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5 b4 V0 W, z) V3 c3 r(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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(x-x)= 0 ，所以答案係0，is it?

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. [9 O$ a9 _; u+ x) w唔似a.math題' [( R( S0 }6 T. r
似IQ題=.=
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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:/ J! p$ I1 ~" p
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& l, O, L7 u1 p* `(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/ F. ], ^3 Y4 s2 H
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.........8 x8 C( y$ G, Z% J" m7 B; f# U

# R7 ]. f: r' q, y- Y7 J6 [+ _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 ]