| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎+ O& f6 z' l7 Y7 u# K! r8 \

6 B" [0 N3 A) \- E2 K& u9 p(x - a) = x - a$ `* ]; `, o) ]. i$ }; ?$ i
(x - a) (x - b) = x^2 – ax – bx + ab! r. i5 Q( Y! a( S' a
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
! y' X. h* r- G3 U$ R! Q% L(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd  _2 }( ~3 |9 x+ I
如此種推，
$ h! R- T; p9 B9 a, f$ J(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:; f) J0 B& j" o+ N& Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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' u( t8 ^# z- G' R[ 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:
# ^  a6 U: c- m$ K咁難既=.="
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+ n2 ^2 D8 v3 D$ \$ n: N[ 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:
: _4 z4 \! f& `! P' p3 b第一個答中有獎
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(x - ...

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6 U' Z9 z$ b7 ]2 y" V7 M9 w& R; h6 f+ B(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:/ P2 U7 P5 }: l3 c" m

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
4 v9 `+ ]9 q+ r6 o. i$ s似IQ題=.=$ D0 P+ R2 r3 L& q
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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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0 `7 A7 a: M9 ^4 y7 [7 U(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
7 H6 x: w7 z3 g% V( U0 B( r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
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]