| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎' r# A: {- y: ~% O3 k0 W  J2 n; J

% {  h$ u# @; M. M$ I(x - a) = x - a
0 c% e' w; j5 l' M4 }3 c& a- a(x - a) (x - b) = x^2 – ax – bx + ab: @7 B- ^) d) ~( B
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ |) @% F& c1 i0 C& b
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 D: q5 i+ g9 N/ ?5 z2 I
如此種推，
, n$ {. k& G: Z" I, |& E(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:
3 z& \/ b7 E& a; R% d$ ?0 r(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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) }/ p$ \! q4 p9 R5 {

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% d3 i9 v& Q- f7 V* ?1 [6 z[ 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:
* g" N7 w0 H: y( H& w- d咁難既=.=". \; K/ h) b% V% V

$ X' t* @7 S% m7 U$ {[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

. O; E2 @7 d* `  T* R6 u  u

2 q* [0 n1 c. @Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
' ?$ o  x( D" V9 ~; {8 ^9 R第一個答中有獎
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" l+ \1 b9 y" r2 x8 M# A- X(x - ...

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! u0 t) n7 f: |. x(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
+ y8 f: |' i6 p$ u1 d1 J/ O1 k5 v! o
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
) @  t; ]3 z1 U/ V似IQ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:
+ z+ B8 T8 O& u3 f; ]7 @. }7 s
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2 R8 J9 [/ Y1 b9 n(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過
$ R7 n/ D& [& }) P: P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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$ M* t# g/ c0 ]- e6 v: c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 ]