| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 ?9 U, l" ~9 G# O. ^# O* Z
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(x - a) = x - a; Q9 h' O0 I8 e3 b  q
(x - a) (x - b) = x^2 – ax – bx + ab. v- [; X. @; Y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, U, b/ V3 {$ B
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ t# ?. X0 q; o+ E  a9 {
如此種推，' O' x% G- Q! x7 E; u
(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:
$ v2 ^) s! K$ c% ?6 N$ ^  x% }( f(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:
+ ~7 U; j1 Z0 W3 p3 e, v  Y3 W咁難既=.="
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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:% e% F  y6 w' Y
第一個答中有獎/ }$ a6 V# I. [4 P! K, d8 ?
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(x - ...

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/ x! E# C) k% H, T+ @' c(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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$ o* J$ [' y4 d1 m  k(x-x)= 0 ，所以答案係0，is it?

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) {0 ^6 N' }2 a! o- H唔似a.math題
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+ P: k8 _6 Q' }8 ?[ 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:: u$ G3 m" M% o

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4 a8 c8 T" ?9 k7 {* T# r# `(x-x)= 0 ，所以答案係0，is it?

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' G) L$ e1 e' ~9 w- E- [& A# E) wBingo~

waikong

我係學校個學生會單張見過
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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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這條問題，貼落吹水版，名副其實5 p2 b  D+ {9 I6 r6 n6 d  s- Q- a+ l
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]