| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a) \; k1 `' F  Z% a1 y
(x - a) (x - b) = x^2 – ax – bx + ab, S4 h1 x9 a5 j5 [
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc( L* {5 }" {! f6 ?5 d  \2 X
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
3 a/ K: g0 O6 G8 |如此種推，
# M$ r) W* L0 ?9 U# m: j(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ U. V9 j* J) B" Y9 Y
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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:
/ `& x6 T, ]7 ^: d(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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$ e6 @5 [2 I; {- p3 E[ 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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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 ]# l) g. X5 V5 U2 fThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
8 S" a% S5 j3 G3 j第一個答中有獎
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" r$ L  O( [  A. b9 f* L(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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(x-x)= 0 ，所以答案係0，is it?

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: }' b$ o+ R" H- j% q唔似a.math題
1 p4 }1 ^+ I) ~9 d, n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:
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(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1 d5 |8 y- k) T4 X" A0 I9 d0 I; l
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.........8 m/ U0 q: k) P' c/ s7 U

! s9 g$ \& G" O% _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 ]