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標題: | TriTri | A-Math 加分題 | [打印本頁]

作者: Triangel 時間: 2007-4-18 01:26 PM 標題: | TriTri | A-Math 加分題 |

第一個答中有獎! I! Y* O; Y {4 H& L
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(x - a) = x - a
(x - a) (x - b) = x^2 – ax – bx + ab5 {& O! H3 q0 c7 O; b
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" \5 t& q2 h' e) Y! L
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
如此種推，
(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 ]

作者: 大大 時間: 2007-4-18 01:41 PM

點解你個問題好似有d問題: `3 O5 d7 G* m [0 H/ i

Originally posted by Triangel at 2007-4-18 01:26 PM:! z& g5 L& z" u0 x
(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 ]

作者: Triangel 時間: 2007-4-18 01:54 PM

Originally posted by 大大 at 2007-4-18 01:41 PM:
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& m$ E. c) l0 `3 o# w[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

作者: littlenic 時間: 2007-4-18 01:54 PM

Originally posted by Triangel at 2007-4-18 01:26 PM:# B" y- [4 c% R' z
第一個答中有獎+ E( ` u8 n5 y/ M4 t

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(x-x)= 0 ，所以答案係0，is it?

作者: 大大 時間: 2007-4-18 01:56 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:" B! J0 W8 k- @$ M
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3 P/ x4 }; _4 _0 x; f; d(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題" i0 l5 f3 G' j6 f
似IQ題=.=4 M+ B4 f; }% K  m. h. x
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

作者: Triangel 時間: 2007-4-18 01:57 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:6 a6 k) S4 i0 m" J/ L
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, @( c2 @" x4 ~5 Q(x-x)= 0 ，所以答案係0，is it?

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Bingo~

作者: waikong 時間: 2007-4-18 03:53 PM

我係學校個學生會單張見過

諗左一陣先諗到

作者: playbr2 時間: 2007-4-18 04:00 PM

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

作者: karen0123 時間: 2007-4-18 05:50 PM

(哭)~~~~~其實我都知係0.........
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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 ]

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