| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a( ]4 F( g& b* q- d4 b$ x
(x - a) (x - b) = x^2 – ax – bx + ab3 D0 }3 `0 f1 `
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc% \& N. ^. Q' P8 s& r
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* _! [8 _) {- v! }
如此種推，
$ @# T* @8 v( a4 N3 i(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:! L% W: q, n" ?) Z/ x
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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" K7 m& U, a) S+ b[ 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:* X# a; [# X# V9 d6 T, |2 S
咁難既=.="
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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:8 G/ s0 H' |/ @7 h* F' M
第一個答中有獎
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(x - ...

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9 Q% N& y9 R$ A4 S(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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: U- Y* [; h! A' f$ z7 S1 b(x-x)= 0 ，所以答案係0，is it?

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$ m; @* B, ~3 N唔似a.math題
  T7 @) q& G  M& Y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
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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.........
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9 M9 H% ^) Q  _( d( H% r3 I% q這條問題，貼落吹水版，名副其實8 S4 P9 d2 M* h# F8 `
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]