| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎2 C/ z7 H  l5 u% U) _3 A" D+ |
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(x - a) = x - a
& y* g+ q' n1 C+ j- H( L(x - a) (x - b) = x^2 – ax – bx + ab
" e! q1 O8 M5 O; U0 X(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
0 y* m6 M, ^0 U  s3 j" d(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
/ |" P- E/ A& U( C& K如此種推，
( u0 Z1 C7 U8 _. Z% f! l+ Q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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+ K. X' ?$ m- ^9 `3 }, i[ 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:
; Q) U$ K& B$ v, `+ f, c; p(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:3 O  s  o& b, q
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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$ b2 P; b! n- oThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 m" P2 h( _: b% A! W( Q9 d3 t& a0 t# b第一個答中有獎9 x* |" }+ e' M2 ~; s. Q! b
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(x - ...

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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:0 |7 e' H4 K" n# W) B5 v

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7 W# `* N( ]6 r, P9 W(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題+ Y0 Q% }2 ~% l# ^
似IQ題=.=
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  g2 D! E; u/ I" F- ^, x[ 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:8 p, q0 _0 h: F

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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  e' y" l5 j$ l; b2 j
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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  K8 ^: @7 c. L( ~  {: e6 j這條問題，貼落吹水版，名副其實$ J+ f, x  q+ l; m8 t1 t2 ^

0 i& K8 e' p5 i( M[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]