| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
: s  A- j$ I' D: T4 X6 P(x - a) (x - b) = x^2 – ax – bx + ab
! k0 }5 v9 {6 K; W1 ]6 q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc9 E7 m# n# a7 Z# u" w6 A
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; j( P9 V, i& A6 ~* Y  s* @* `
如此種推，. S+ f6 i. W1 o9 ?! q/ _
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???' l1 I7 x# s0 D4 S$ k& g: F" y

4 ^. `! m! h  \9 z% n  L# G[ 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# m6 S5 _3 c% |1 t  d7 e0 e7 C

Originally posted by Triangel at 2007-4-18 01:26 PM:
) ~( |* L* n6 z3 R(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc: {+ Y: m  A+ S* r* R/ M" _) E4 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:
& ~0 H+ H5 @5 p4 N  Z/ D咁難既=.="- z4 d$ e8 Y  j. d: p4 c! w
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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:/ w( C% c" m! |
第一個答中有獎5 i0 ^1 d# e  m* i5 K

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* P! P. U& I' j9 i, J( F0 J(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:/ Z9 q+ T0 A1 p' W& A2 R& \6 A

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(x-x)= 0 ，所以答案係0，is it?

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, a6 J' ~" G4 \- P- E( c唔似a.math題/ C" D+ h' E- ]. Y. a& k
似IQ題=.=) }- J* I6 U8 R
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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:
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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9 W( S6 _. |( L! f
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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這條問題，貼落吹水版，名副其實9 K, b. c( Y5 b

$ x9 S2 O4 H; g' k, e3 u[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]