| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, H- W( T8 |* Y+ ~3 H
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(x - a) = x - a
- f6 ]0 F# n9 p1 Y1 a, ]* S7 Q(x - a) (x - b) = x^2 – ax – bx + ab
- Z  i4 d6 w  Z7 t0 w4 a% d(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc# i8 o, b' k; G9 @; Y
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
5 n6 o; d3 h  L* i, h3 M如此種推，
' A2 J8 i: {" I8 g* s6 `0 `& I/ I(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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; Z5 ?, j0 R% |% l+ S

Originally posted by Triangel at 2007-4-18 01:26 PM:; L  a/ V* R0 \7 S" L$ \2 F9 p9 b3 o
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc% U  l4 }: H. E4 d& R
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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:* c$ w( E8 C) ^) q9 Q5 e: `& @* t
咁難既=.="2 s' D! n4 c, b# s
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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:
7 r0 |5 D0 N) A- I! c第一個答中有獎* c6 I3 e! j" j

. |0 @( K+ K5 I+ a(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:, F3 X; i5 L! q; n
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* r# p& S8 v* E9 y
似IQ題=.=
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) K- d1 w4 P# p! X; b9 q! G5 ?[ 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! Q1 R! t7 _5 X+ h  Y
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.........( _3 O4 E, g6 _5 N5 t/ ?
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這條問題，貼落吹水版，名副其實/ O; u- V: J% D" R( K$ i$ [

$ t  I3 G* k, D% C7 ~6 m) C, {[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]