| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ L, m) ]+ J+ O9 v6 `' l0 ?

- a' Z- F& i- ]2 x( G2 I7 u' T(x - a) = x - a
1 N) r6 V% J: q- a. j, @, q2 ^(x - a) (x - b) = x^2 – ax – bx + ab( V% q4 q# L9 S' n
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 t$ S2 N7 @& n# A9 M6 `/ a$ F(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd  k+ k6 ?8 c  a% L! q7 v$ M
如此種推，' P* P( |' }" L* Z
(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:
) A% K1 |, p/ O; H+ C( E0 q(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:
& T6 j' M/ y8 [& _+ C) d* T4 F( n咁難既=.="% x' N+ u% ~0 |! k) G
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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:5 Y8 D# m+ ]/ J$ f5 b0 G
第一個答中有獎
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# G2 ]1 q# w9 Z5 n(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:/ g2 w3 f  T+ W( h* |6 t
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! R' A4 R1 \- E% t* S(x-x)= 0 ，所以答案係0，is it?

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( ^; ~, r3 Y" i# M( w; x唔似a.math題
4 w. w& x3 J% N2 j" f7 m+ {似IQ題=.=# H$ ~+ Z& C& ~

% _# }3 F4 m: h' N[ 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:1 H6 n2 A! x) y' I& B
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; q, H1 ?! f. m2 Q(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
$ V1 R/ Z! Y% A: J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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; ]- J# ^: H& L0 k9 C1 {這條問題，貼落吹水版，名副其實
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# ?9 O, {' O: l0 I$ U[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]