| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎6 o1 n# Z. d/ b+ ^/ J( r' p
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(x - a) = x - a
3 M. R+ X$ \) q' f(x - a) (x - b) = x^2 – ax – bx + ab
0 c* Z2 J8 Q$ \" l0 J# {(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
, ~5 _$ Z' \0 w# A(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
& i) s( p8 @4 }3 A, M) _5 P1 Z如此種推，
+ x& t( E# p3 g2 c2 Q8 Y(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???4 m$ w( p4 s% k

$ ?: }+ a+ Z5 q6 q# D[ 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" D) G4 g4 W0 k1 M6 ?

Originally posted by Triangel at 2007-4-18 01:26 PM:: k" s6 Z& M/ H/ q4 m
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc7 q# Y  J5 a: f! L0 O6 v6 N( h4 s0 z
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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:& X1 F7 ?/ _- s+ ]7 t2 B
咁難既=.="5 _, }* I' o; X9 Q; T
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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:
* T: t5 y! B( k* {. w% j. o4 r第一個答中有獎$ V0 x3 Y) s' _# q5 F
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(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:: H0 m. p( x# `1 Z2 Y' g

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) h0 c# _9 S. W1 Z5 F1 `, P0 u) }(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題2 A+ ^* j  ^! w9 s4 q. t. `
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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+ l" a6 c' |3 B% V1 |(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* \% b% t/ j4 K, t  q. R9 ?
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........./ P) r& E% F! j6 `4 [

# h7 e% o) R  [: m這條問題，貼落吹水版，名副其實& ^9 i8 I) l. s0 |+ H6 G

/ O$ g: E  N2 `% n* c6 {[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]