| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎; u0 p2 Q, T5 B

/ {; y- q7 N/ R8 k+ M( }. D+ x(x - a) = x - a1 y) Q, E- e# K1 C
(x - a) (x - b) = x^2 – ax – bx + ab. B; }2 G/ d+ W$ P% ?
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc3 y" Q+ ]( I4 O& Y
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ h: e. @6 Z! V3 P2 v6 Q
如此種推，
. X; q, u  n% d5 m8 q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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2 d/ k5 W' \, C# l! K3 r7 N6 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
4 p1 ~2 E- M7 L' W3 ?(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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# `) d2 y- t5 t$ o1 D[ 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:! s2 \; ~: m" M" I' _+ [' C( b
咁難既=.="4 S3 W7 h) H& p/ H+ u, p% `
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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/ f& V+ j1 p% W2 Q& k; N! aThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
) K" M  D" o6 X* L9 Q6 b第一個答中有獎- `8 r9 `* }, h  |& K' K5 {
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(x - ...

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, p8 _4 C$ F* r4 D! ^* n(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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3 J7 g8 U* T; n8 c(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* a6 x! _0 p) J# A+ o, U$ t
似IQ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:6 Z' U' y, {- H) d% p% h/ y
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& E  ]8 T6 M0 A7 m, G2 v(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% z* J) M7 ^% G6 l5 H
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.........% R. }' c- X; `! X5 R
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這條問題，貼落吹水版，名副其實; h% `3 ~6 w9 o' \. ?+ @% {
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]