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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
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(x - a) = x - a
(x - a) (x - b) = x^2 – ax – bx + ab
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! y3 {/ c: X$ m" t: b
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
如此種推，2 S6 H8 A! f" w+ N" e: C: v
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???- h$ h6 y6 o$ U4 m, i: |
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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; m) c `) A( a- H+ S5 ?

Originally posted by Triangel at 2007-4-18 01:26 PM:! W5 r7 ]$ ~2 {
(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:
) W8 P. [- S; j咁難既=.="
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' V6 I0 Z U) R, U; k[ 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:9 m q5 {0 g. b6 @: J* V
第一個答中有獎% m7 }* @3 d; K8 M) L+ ^- ~" M& g
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(x - ...

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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:
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8 c2 K& ~* ~' N& c' c" Z- i(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題6 y' b6 s/ u" U! M" V8 u8 c! Q
似IQ題=.=
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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:5 V4 ?4 y4 T3 ^" c# ~' {! n% F/ I+ }
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6 u/ k0 s4 l( f, {% I(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.........( ?& p( B4 G" c# K% m3 ^) Z3 F; o
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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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