| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎. E) R( l" E2 _
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(x - a) = x - a
9 C0 E& e& W2 z0 N(x - a) (x - b) = x^2 – ax – bx + ab* a! e4 p$ K. G" D3 O! {+ [
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc1 m5 E9 E* j1 p
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 [1 s% t0 E/ c1 O
如此種推，
  Z. u$ H: |. P' Q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???  T( z7 k9 a& O4 g

7 ~5 C! d' ~' o9 p/ p# w% J1 ?[ 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:5 n! L4 _8 Q. }$ G& N# g! c
(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:! Z1 D$ S9 ~' y- G& h, v: d
咁難既=.="
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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:  H( Q0 Q  H8 o; Q1 ?
第一個答中有獎! b. y0 Q5 N, G8 ~9 b" E' g5 z
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(x - ...

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( Y( c4 a- S3 [* @( |1 o(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 A( a: |  e4 K唔似a.math題
8 I8 M0 Z1 U" }( A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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8 ?' P4 M9 K& k9 y(x-x)= 0 ，所以答案係0，is it?

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6 n# Y1 x( |3 dBingo~

waikong

我係學校個學生會單張見過+ h8 S' @( B+ h$ o3 I
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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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 ]