| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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5 M, {: q" e( n(x - a) = x - a( O/ ^1 D7 @* c8 P+ ]
(x - a) (x - b) = x^2 – ax – bx + ab* [5 D) B4 e6 ^! Y' ]+ @
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc% A" b0 x1 k3 k3 g! ]; ^
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd2 P/ O; {& E1 X% O$ K1 e
如此種推，( V) [% |7 x% M
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???. k4 S4 M! k4 h3 i5 Z; |& @' 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:/ U; I8 O8 k" c) T% [
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc7 P; h# l2 x" r6 A8 k

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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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1 q& m4 Y8 Q$ e7 ~! C( K[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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) z7 K' L# r, |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:- @. y( T) z/ @6 W
第一個答中有獎
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6 @2 x: H2 Z# v, d6 ~' E8 ?(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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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題" i5 b. f& R+ }, I* C2 Q( V% T+ p
似IQ題=.=
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2 ]' V3 Z' t) x  X4 N[ 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:4 A3 u" w' i" G5 @& V& @$ i1 g
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2 J1 r7 ^4 d, x5 |' q8 l, c(x-x)= 0 ，所以答案係0，is it?

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- e1 Z1 M) @+ a3 Z+ a4 z9 ]Bingo~

waikong

我係學校個學生會單張見過, Y8 _- z4 R; J7 P6 C
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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8 m7 w6 E+ D- A這條問題，貼落吹水版，名副其實! B5 d9 r& ]( ]) @3 S" t

7 i) c7 f( I3 U& I) h[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]