| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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2 R5 `# B; F( b6 }! v" a; u( G(x - a) = x - a
! i3 N& X$ ^8 F2 z9 {(x - a) (x - b) = x^2 – ax – bx + ab( u9 r) W1 r, U1 g2 [/ j' W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
2 X& V, h8 _8 q5 V8 Y. w+ Y$ y(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: A/ E5 B4 `: C/ q; J
如此種推，
: W( f! a% _* P(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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8 l7 j* T+ C% J9 m* q9 g  h, E[ 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 o4 d0 u: U; K& H0 u. M1 _* _(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:
  b  i% o" `- R- x咁難既=.="
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8 w' W/ b$ D; _. w/ j* E3 h[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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* Z2 C% F6 b: nThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
) S5 m+ o- n) b8 v第一個答中有獎
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( }/ ]- c0 d( |' u0 M1 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:1 ]' f) A, A. A+ i

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! K- x, L! I7 @(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題2 V8 {) D& B# X7 r$ e
似IQ題=.=; _2 Q, W1 D$ c: i7 i
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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
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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.........6 b% ^! U; A( _. [

3 H/ h5 U  b* z( n這條問題，貼落吹水版，名副其實6 Z1 k; {1 ?- H) ~
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]