| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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2 I- M5 c7 }+ s; W; f0 |(x - a) = x - a) v) L8 y, D+ t  `/ t5 k% C
(x - a) (x - b) = x^2 – ax – bx + ab
$ ?$ ~, }  Y& T1 y4 m4 P* K(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc; Z6 D  `2 y( |4 _9 {
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: g: V& B  O% s/ P5 h
如此種推，+ p  [0 f$ U+ A. o8 @( V, l
(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9 ]8 ~' M8 S, F: Q, N

Originally posted by Triangel at 2007-4-18 01:26 PM:
! m/ v8 r" |' o- I& _2 d5 l( I/ W, c/ r(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc0 g5 [  J! m6 C2 b
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/ v$ R' U; `$ H/ R[ 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:
; b  v, O7 X# W3 A0 j咁難既=.="
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0 O8 k. k3 L! \  i[ 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:$ p! k8 J( i; D
第一個答中有獎
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(x - ...

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7 F4 ~9 z' a7 I; R+ R, y# A(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:' }4 r! V' _) n/ n' U; Q

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題- K1 [1 h/ ?' U2 k& Z+ a
似IQ題=.=
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( x$ I% O8 i' H) n[ 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:8 l; W7 `# [/ h( ~# L

0 a; @1 O% S9 o6 m' T0 V* ^1 ?; m0 Y/ O& u( Z0 ]3 a
(x-x)= 0 ，所以答案係0，is it?

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" i9 c7 W; b. GBingo~

waikong

我係學校個學生會單張見過1 Z. [6 a8 b6 I- t
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.........
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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 ]