| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎6 F* N; g9 ^7 o1 J, G
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(x - a) = x - a
$ s" Z$ Q' L6 K- i5 V' ?(x - a) (x - b) = x^2 – ax – bx + ab
* }, |( Y0 L( x* h/ p5 E(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc& a- C+ D2 k3 J( r5 |6 O+ b+ o
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd) L# p5 k3 w% N* i3 K( ^
如此種推，8 j9 z8 ~1 E+ O" p" E
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???: x! F! c  J% ]% y+ O3 u
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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:6 O! E8 d1 j5 X& z
(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 ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:4 K" w* Q! q) ]1 \6 v8 U
咁難既=.="
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4 l. K4 s% K4 _+ `[ 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:
+ P1 A$ d. A! d( \1 @; E' J第一個答中有獎
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* V$ I8 U) b7 t- Z( ?. d& v(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:) X6 w+ w% X4 s' }  D

6 P7 l. Z& `) l/ b
6 N* q' E! v% H. B$ u(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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; c" F0 m7 g) O; q[ 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:$ p7 a9 ^3 H* E

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(x-x)= 0 ，所以答案係0，is it?

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- {; _9 M1 ?' g8 I7 ABingo~

waikong

我係學校個學生會單張見過1 r, |3 L8 q3 f" m  e% @8 w$ t  W
諗左一陣先諗到

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.........% C! i) u2 @* U+ M. \$ F
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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 ]