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Triangel 發表於 2007-4-18 01:26 PM

| TriTri | A-Math 加分題 |

第一個答中有獎~CD4fl+rkZ)`;Y v

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e+`7ax [color=Blue](x - a) [/color] = x - a
*Co4}w)DB+jW [color=Blue](x - a) (x - b)[/color] = x^2 – ax – bx + ab SYif(h0cZ'w
[color=Blue](x - a) (x - b) (x – c) [/color] =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc/F1R5`t tkX_X/V"q
[color=Blue](x - a) (x - b) (x – c) (x - d)[/color] = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcdLYsz.U.?kZ
如此種推，p6@*I9d5auSd4i
[color=Blue](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) [/color]= ???B'|:A go1N

@Rb*y3y$n!y UD5|L [[i] Last edited by Triangel on 2007-4-18 at 01:52 PM [/i]]

大大 發表於 2007-4-18 01:41 PM

點解你個問題好似有d問題g+Q~&A7BqJ-F
[quote]Originally posted by [i]Triangel[/i] at 2007-4-18 01:26 PM:A-I _XR
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 [color=red]–[/color] abx + acx + bcx - abc
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[/quote]#GhQS,Y/] \*?

'\t!O+fr|#W9|P [[i] Last edited by 大大 on 2007-4-18 at 01:54 PM [/i]]

Triangel 發表於 2007-4-18 01:54 PM

[quote]Originally posted by [i]大大[/i] at 2007-4-18 01:41 PM:%e_.X+q
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[[i] Last edited by 大大 on 2007-4-18 at 01:52 PM [/i]] [/quote]
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}6@ Thanks! 更正啦

littlenic 發表於 2007-4-18 01:54 PM

[quote]Originally posted by [i]Triangel[/i] at 2007-4-18 01:26 PM:
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C%_0Xeq#j2['X 第一個答中有獎,M(y J/\ql*U

5m/W.|(@0\Euf/v)p [color=Blue](x - ... [/quote]
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(x-x)= 0 ，所以答案係0，is it?

大大 發表於 2007-4-18 01:56 PM

[quote]Originally posted by [i]littlenic[/i] at 2007-4-18 01:54 PM:
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.r8L Yz*^/H9C (x-x)= 0 ，所以答案係0，is it? [/quote]
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[[i] Last edited by 大大 on 2007-4-18 at 01:57 PM [/i]]

Triangel 發表於 2007-4-18 01:57 PM

[quote]Originally posted by [i]littlenic[/i] at 2007-4-18 01:54 PM:%Ozzbw3G"Ed,A

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(x-x)= 0 ，所以答案係0，is it? [/quote]}'XCxMQ(p
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Bingo~

waikong 發表於 2007-4-18 03:53 PM

我係學校個學生會單張見過:haha::haha:$i]Hs6U2E1`2O]
諗左一陣先諗到

playbr2 發表於 2007-4-18 04:00 PM

我吾識答啊[IMG]http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif[/IMG]~~~ [IMG]http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif[/IMG]

karen0123 發表於 2007-4-18 05:50 PM

(哭)~~~~~其實我都知係0.........
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jPVy6PM 這條問題，貼落吹水版，名副其實:naughty::naughty:
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~.X"_9[AN [[i] Last edited by karen0123 on 2007-4-18 at 05:51 PM [/i]]

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