| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a8 p3 S1 W% X! ]9 ]3 a* _; v7 T  f
(x - a) (x - b) = x^2 – ax – bx + ab% H; o/ ~: J  Y# ?# m: F
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! a* C# _' t9 Q3 \% k, _3 o
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
2 f& {( e( P( k5 {% W) [4 W! W如此種推，
  c/ }% g  }5 @0 g6 Q# A* {3 f' {(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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5 e5 N3 y) l2 t; E[ 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5 v/ ~% O3 x3 G( T4 O

Originally posted by Triangel at 2007-4-18 01:26 PM:
# a7 X3 v) Q- L) ?0 ^(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc0 i- T0 s& d& a8 ^+ T& F
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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:
  }. t: \1 H4 {" t/ i# f5 Z7 D4 O9 K4 @' P咁難既=.="; p! e: |1 Z5 a
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[ 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:
! z- q1 R, C3 L+ \; l$ ^, j第一個答中有獎% j3 z9 _" s3 Y; g1 U4 x5 i

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, Z) i" J$ n4 m1 e" s; t; C" {(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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1 m$ b+ `# _; \  C唔似a.math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:1 S- {7 F- e6 Z0 M

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) [4 I7 d, A. l* F; M# x(x-x)= 0 ，所以答案係0，is it?

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: K9 d6 X$ E+ O$ m) t: X% h+ MBingo~

waikong

我係學校個學生會單張見過
! u9 ]0 H, c' A; c: r+ p/ `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.........+ G! V( Z; m% F( G. I7 U

! `  h  l+ x! @* h$ M) L* I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 ]