| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 W5 \3 \2 |0 q6 }7 a
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(x - a) = x - a
  l* |. L( j( [9 ]3 Y( f. ~, Y(x - a) (x - b) = x^2 – ax – bx + ab
- n" T$ w+ E7 p# u7 w(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) ]" _  Z3 a( ~) ~(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
$ B6 X- W9 i9 ~2 w如此種推，
) b$ h& i8 `# V% S3 I% l2 U# R2 i(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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! e- H: Y, m  ~: b' G6 v[ 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:
, ?0 Z. P/ z5 s9 T(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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0 Y* H  q* P9 A9 M7 R[ 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:
0 j2 A6 G3 P$ p咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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  j$ s3 ?9 T7 o5 N# m8 EThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
' g/ P! g2 U; F( i第一個答中有獎
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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:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題! B- @. g, {1 J6 p9 j' z
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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/ s  Z1 y, i! a0 c4 Z+ O0 Q' I: t(x-x)= 0 ，所以答案係0，is it?

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9 U% H! G6 }- R, @8 w( K( ^Bingo~

waikong

我係學校個學生會單張見過
' @; A. B! W9 E; b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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* O2 f# B. u) h" J. `這條問題，貼落吹水版，名副其實
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& ^) s* T4 a6 X* V8 D[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]