| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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0 l, B$ M" M7 T(x - a) = x - a
' {" _; q! V- h/ m(x - a) (x - b) = x^2 – ax – bx + ab$ O- p! p) \( D; e6 ]- C
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" N  J6 |$ w  p
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd, ~2 B4 R/ V8 e9 p
如此種推，( }; O3 C  {! m2 O
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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1 S6 R9 M8 L$ ^2 u) S4 Q[ 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) [! `) Z  ^8 B( [1 ?9 @" N. h

Originally posted by Triangel at 2007-4-18 01:26 PM:6 G" S% |3 G1 W& D7 ^+ y7 o2 Y
(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:8 j" V- c, g% X
咁難既=.="% _- F& I# c- f# z# v7 Q- V
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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$ y  i, G" G$ o3 {* GThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:  u/ @6 w8 `  n1 w4 I3 E  s
第一個答中有獎5 S# M0 c/ e: @' l" 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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. F5 X; z/ d# {2 f+ V5 P唔似a.math題
1 k6 E2 e0 A6 p+ J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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(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  v3 G; f/ _- `
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.........1 B# b! b& L/ r  ?8 x
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這條問題，貼落吹水版，名副其實' D- o* |' ?5 O+ E8 [

0 H3 B1 S5 V6 i[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]