| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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9 C$ _- n9 a* |* j* k(x - a) = x - a0 `2 s. y$ p6 X% X6 Z; a" X' F( B
(x - a) (x - b) = x^2 – ax – bx + ab
8 w8 E3 t) D& o8 L(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc. o4 t! ~. f% n. b# r8 S
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
! b5 W# \2 M, M* A如此種推，
+ f$ h- ~6 _1 b' e0 F(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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
& j$ k" f& i5 h, R(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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+ X: k8 r" f0 ^& d+ F: p4 g3 l. c[ 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:) e. ~' G/ z6 w+ L8 ?# ^8 S3 o
咁難既=.="# x) v7 J  V; h6 I& y: B

2 M4 @& H: P  f' h[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 O3 W$ _. O+ O( a, ]: TThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:- k* o5 K8 {# t
第一個答中有獎( D& e" ^5 _" l
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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:: U3 T4 T5 G6 `
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  c$ U$ r: {. u9 ](x-x)= 0 ，所以答案係0，is it?

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' T( t3 X3 V9 J8 Z* o: p唔似a.math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:3 d' j6 l1 k6 W/ M
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- I* M* c, }" q/ j& C. b(x-x)= 0 ，所以答案係0，is it?

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  }- {3 i! S; d* D0 X) e) Y8 ^Bingo~

waikong

我係學校個學生會單張見過( c2 ]8 U3 E( w) `
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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! I2 h+ N, |( }2 a) |) O' b9 t! o這條問題，貼落吹水版，名副其實$ A9 W/ t( X) }7 e6 N( U

  ~7 ^4 d6 T2 p/ {! W[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]