| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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7 l% W9 o: \! z9 z(x - a) = x - a* `5 E. n: S4 w9 g
(x - a) (x - b) = x^2 – ax – bx + ab! K9 k$ \5 K% z6 e
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
- O) G' ?; _% i  `( ](x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd' A* ]1 g7 e* t/ j+ \
如此種推，
* `2 E" N3 u3 {(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% f2 y: U, r9 `6 y) R

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ ^! H1 o1 Q0 Z( Z) N(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc" c7 u! m/ T& j3 ?

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2 A3 h7 A. c0 T, t+ {/ O/ K4 ~[ 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:
" @$ J' F/ I# A" z咁難既=.="/ N8 y/ H: A  O7 H6 ]2 Z

5 F* i2 w2 G4 H% X[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& F) }( _3 m; x( @6 A& l- W- P( \Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:( a/ z1 q0 Q  _: N! F
第一個答中有獎
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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:8 M# L8 D9 M* t# ^4 f3 b. Q- U
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( E' p3 j0 K  P! x: {$ H+ y(x-x)= 0 ，所以答案係0，is it?

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. S  ]! T! g1 E! e唔似a.math題
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9 i) D; \4 ~- b( l[ 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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5 G  R0 y* o5 ]" k4 s" o(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0 V4 r- D& i: m3 R" z; N9 B, M
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.........% p8 s' |( S% u% @/ P) m- b

% a. x- Y, v6 I0 Z: b: J" ^這條問題，貼落吹水版，名副其實( v( C! }+ k) o
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]