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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7f7q'@pv.|

UUdsOUm\K] [color=Blue](x - a) [/color] = x - a*c!oO V%o(y:Z-E9b
[color=Blue](x - a) (x - b)[/color] = x^2 – ax – bx + ab
&k)LW[+rw'M7My [color=Blue](x - a) (x - b) (x – c) [/color] =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abcGY6Bs(` |
[color=Blue](x - a) (x - b) (x – c) (x - d)[/color] = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcdWxv:]*NF csY9C{i
如此種推，
%I L)Pk y4Zhvt [color=Blue](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) [/color]= ???H,cN]8d^9fF

I&kl&Az [[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r4X/v%F)R/_G
[quote]Originally posted by [i]Triangel[/i] at 2007-4-18 01:26 PM:
B;_P%C1M}{X (x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 [color=red]–[/color] abx + acx + bcx - abcV4D'c)~\Re

!^)w K0h7DkO#~4W [/quote]
aAQ+?qW)qB'V
Kw {)^d"e [[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:#D*T&h
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咁難既=.="
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s*b-t2]:ReY [[i] Last edited by 大大 on 2007-4-18 at 01:52 PM [/i]] [/quote]$j2[([4IN-U#d1n
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y,R7xh3r[ 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:?+`-EEg9O
第一個答中有獎
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4}$m:Lh/JV7Ye6S [color=Blue](x - ... [/quote]
^sU1d|;c za
j J6~4XRTg|D0b (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:
"G"Xjr(t9WN d7x}6rG,R(B4d1t
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(x-x)= 0 ，所以答案係0，is it? [/quote]
0R:bH1F4@4T :good:
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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:.DP:L6~,zMj^


a1si%G7|!b Y9Rm?u2P
(x-x)= 0 ，所以答案係0，is it? [/quote]
%t5J5X"fc$x Z-i+VS;}E j
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:
7|!DH#g5o3Av+V]D0KI n 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.........
pn6K gC,Bq.sD
!pS N?G9\F(A8Z$L,o] 這條問題，貼落吹水版，名副其實:naughty::naughty:
p)O`7L2xz&wI+eLY
(HpO#o X@ l/T2B [[i] Last edited by karen0123 on 2007-4-18 at 05:51 PM [/i]]

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