| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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6 b; }  p* q6 i& N$ q! Y(x - a) = x - a$ o7 S6 c% q8 W$ g( ^4 W" s/ [; y1 O
(x - a) (x - b) = x^2 – ax – bx + ab# O( ~, B! ^5 T# @7 q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc. E7 k  J& k' ]. ~' l  U, P
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* {! r% {4 w5 h% a9 R/ S% n
如此種推，
1 s% w  e" f8 q* F$ T" U0 y(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ _6 M2 _3 r$ p! }. [0 H: u% j

9 w6 n) V- N: a. Z6 n9 T( a% B: k[ 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: j7 d  t/ L1 }- J4 @$ n8 C

Originally posted by Triangel at 2007-4-18 01:26 PM:! D) V1 |9 j0 [9 N
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc. R9 Q' ?6 u' X
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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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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5 E, [2 R% g+ U+ x4 fThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 c9 F3 ?% ?+ I0 s% e2 p2 n第一個答中有獎$ [+ V$ _7 F) f* r' {. \/ ~4 f+ j

9 ?3 c% F/ P$ {- l/ d6 Z. j(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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6 Y4 O& P9 J- g  j( p0 y(x-x)= 0 ，所以答案係0，is it?

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. Q0 G3 [% A& @" B3 ?& u唔似a.math題1 Z: R5 e/ H2 e
似IQ題=.=
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& M3 K# N* j5 ~% h. k6 R6 j[ 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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(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/ y7 y/ s% ]- d
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.........% S) u  N+ s0 i$ ~+ @3 Y

# L- Y8 r* y; w這條問題，貼落吹水版，名副其實
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' D* W' K+ V* N" G5 G[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]