| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎8 G- X* S1 l! r' _- ]6 B! o/ a

/ _5 b; v  }+ A8 y+ h: I  }% q(x - a) = x - a7 A7 M- U4 ?- P, l! P) N/ H
(x - a) (x - b) = x^2 – ax – bx + ab. Z8 R7 S, s1 j5 L0 q+ l' O0 W2 k
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
0 o/ C& N  W7 C: Z4 w; s: d(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 t- f/ z4 e" S
如此種推，+ l; J9 k; L5 _7 E. h& _0 e
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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; W# S* d( d7 `; J

Originally posted by Triangel at 2007-4-18 01:26 PM:0 V- p- z3 q# z# J
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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( y7 W: X9 d: k  M# K* ?3 W[ 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:" P4 K- ~) h) R8 h# A5 X. j3 p
咁難既=.="+ U+ M" K& v: Z1 [; i& E
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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( O2 `- g7 N' _5 |0 @Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:4 E: e$ U' }) O" K# s
第一個答中有獎
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(x - ...

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; {, O0 a1 K+ }1 s) I2 l(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:  ^* h1 m& o  _, P

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; S. n- g! {& l' Z3 Q/ E4 C(x-x)= 0 ，所以答案係0，is it?

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) F7 D. w( }$ m' K, r唔似a.math題
( g- m% G. P" q, b$ s5 l" [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:
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! ^' W6 _, t0 @7 h! p% M' f* Z/ J5 k- z(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# N* L0 |" y5 v$ f3 r& r3 [
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.........& S( J. E2 W' N( K+ C; v

6 W' ^* J7 b: f+ O% @; O/ O: y7 i這條問題，貼落吹水版，名副其實
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* C- Z. A8 X: X! f0 e5 Y7 h. h1 n; ~' A[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]