| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
" H: }& k6 f  L8 J9 V(x - a) (x - b) = x^2 – ax – bx + ab* ]2 f* @5 c7 R. w5 r* r+ U: O0 K5 ^
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 }3 Q" O3 O& J1 p4 G(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 l8 w% G6 Y! ~* E* n- D7 a
如此種推，7 @0 x  ^: J. h, f( h7 M6 }1 _
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ n. b2 A0 a/ b0 q. K* s5 Y/ p( Q; J

) G) _& p5 I3 N, X% L[ 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:5 @9 p( }7 ?& r. f8 v7 G1 {
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:  Y8 w+ [  V; `/ m" ~9 |
咁難既=.="5 X2 v5 R! o' L& P) a
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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:! b/ R0 e& R, S( g! V' _. l
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:
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6 v7 t; C, s3 s* |1 \# y(x-x)= 0 ，所以答案係0，is it?

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& G' }6 X6 x; o3 Q唔似a.math題
6 ~9 a! X' x, d6 M- e$ L似IQ題=.=7 _9 }1 N8 f0 k! D7 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:  N- e0 X. K8 l7 Z5 b1 r

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8 R3 P! }) x: [% @(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
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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
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]