| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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  f+ `" ]: u( S(x - a) = x - a
- \% b" v3 G6 [9 K; `(x - a) (x - b) = x^2 – ax – bx + ab. h9 j0 S( y! O, Y6 s: h- }% y; Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) T9 n1 G8 s6 ]$ \- o# ?3 H( P(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd6 ~! U: u+ L6 C% L. e9 g
如此種推，
/ {0 W( o- L! L, Q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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. j; t" v" Z' M8 G8 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$ L' ]& _3 p5 u# V9 A$ f

Originally posted by Triangel at 2007-4-18 01:26 PM:, r) K4 p6 m8 R: ^' H
(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:
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, T& {% u9 f+ b. I) k& B% s[ 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 d- e9 [( R; Y  K
第一個答中有獎. W7 Z: A' t5 y/ }' ~! F
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(x - ...

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  \+ n6 W5 H' X! J4 C( W- p2 J6 P(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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5 X* m# `% l3 f3 ]: W( ~(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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  p2 ]7 E7 S6 H& \/ }2 a6 p  w[ 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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9 F5 ]% ]& Z+ j! Z7 J  _(x-x)= 0 ，所以答案係0，is it?

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0 z6 I" p$ n9 N2 p3 N% Z4 zBingo~

waikong

我係學校個學生會單張見過0 `& C0 K) p& u
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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1 [7 ~6 N, G% K$ R# M- f這條問題，貼落吹水版，名副其實" f/ h0 Z/ T9 I9 T

. P! R: U6 D9 \* J) f, r[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]