| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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. Y$ }- Y: R' b1 @% g(x - a) = x - a) t" J4 @* ?) P  q" N+ H) u  h, ~) d
(x - a) (x - b) = x^2 – ax – bx + ab5 I% M8 X( X2 x9 j7 u
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 ~% ]: w9 j6 y% r1 E(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
  H, D2 r9 ^: Z3 L如此種推，
/ X/ X3 r: h- o' @0 V2 _0 G3 V(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???4 L5 g" O" {7 n7 |& ~; I

7 X' I% U* n2 m$ a[ 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" r7 A* g5 J3 S" K, S+ U1 e

Originally posted by Triangel at 2007-4-18 01:26 PM:
/ W% d  g$ _5 z4 L, e(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, _; w" t$ [$ [; v! p" b
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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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8 R( `  a6 a. P0 l0 BThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
! I5 B  h3 `- y  e) |第一個答中有獎7 {; r  ~% D! o8 @6 W8 F  F. b

: b' T% t& Y, Y% U(x - ...

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; B3 i. K/ T& I; T/ l6 c+ O1 Q(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:3 Y* H9 |& \/ V/ A3 b1 v
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7 V2 C$ k7 n: c; f' L7 A(x-x)= 0 ，所以答案係0，is it?

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唔似a.math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:+ x" q4 c8 i0 ]- f
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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) _& Y2 m, o0 d( b2 L. r! n5 u% g
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.........- _" [# g! {- M7 z3 s9 m6 M8 C8 j
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這條問題，貼落吹水版，名副其實
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6 S1 F! p' @' M& e8 G! e[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]