| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a0 Z; X) B1 k# Y4 y( f- s6 G+ h3 p7 L
(x - a) (x - b) = x^2 – ax – bx + ab
) k+ X9 X0 g+ P5 t) ?+ e(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
7 s0 U, ?5 e7 i" A' [( ]2 B4 D(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
( e6 i- K4 M% v" T* h' y如此種推，% v2 Y$ @: H) w: B
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???: u2 _: E/ S# d* T

0 b! C' a' J/ k1 n8 u! ]: F[ 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; }" t8 w( P! E2 ^8 A# h& y" C4 Y

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ p/ D8 g3 {- W, d(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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  ~$ [0 K, l" |, C  B! R, q8 d0 B1 l[ 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:/ K( j2 c" c9 S) G' c; [" H% {
咁難既=.="/ l  H4 |/ f. K  ?: x
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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:1 j! H7 y; o% q4 J. n/ N1 o/ V
第一個答中有獎" B" y  ]! t- I- P; v1 ~# h
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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:
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: ]0 S! |* _$ H7 A3 Y(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題) Z7 ^! C# W1 E) a# J  S* ?" D
似IQ題=.=
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; i. l  i0 [- L( S" b. ][ 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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# `: e3 v4 w4 C# `* E(x-x)= 0 ，所以答案係0，is it?

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# Y" F3 t! }2 y) DBingo~

waikong

我係學校個學生會單張見過' X9 i6 ], o" P' O
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.........  w- c: c% p) ~# O
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]