| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a  F6 k$ i" E. h' ~. T) k
(x - a) (x - b) = x^2 – ax – bx + ab( p& n: Q1 m' m; V: J
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ t4 i8 q7 C! u4 o(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd7 P4 |! @' q0 Z8 E# x- Y8 n7 f
如此種推，
; i* v; R, X+ d: B+ J  _(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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7 w2 `/ \/ O( u[ 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  f/ r2 t" H' N

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 \$ p, K/ S8 r; @8 L% b# i' a(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:
! a2 n$ Z( a. E2 x+ b1 j* m3 t: O咁難既=.="( ~7 Z4 P1 A" U
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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- c9 G. P( w- s9 _: j9 CThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 w" T' k5 m9 D第一個答中有獎: q5 p3 |4 e" y1 h7 N# e0 J
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(x - ...

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* a# P1 K1 e9 G+ S( 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:' p8 I$ U- F/ K% n

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(x-x)= 0 ，所以答案係0，is it?

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1 G& \, g: p/ E0 ?% n* B唔似a.math題
, T% t- k0 k& B! x8 {+ j3 N- Z" g似IQ題=.=
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8 Z) \0 F8 k: l6 V[ 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:& A- Y0 h5 G0 l. P5 M. f9 U2 S
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) U) s1 d5 M' B) p/ c6 V(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
7 S5 M' A* z1 b2 H$ k! i" 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.........9 ^+ e3 x& i2 e* Q- F
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這條問題，貼落吹水版，名副其實' ]3 t9 Z: N" c% X% |- `0 \; {

3 O1 {; H2 t( Q) s[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]