| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎; D- q" l8 K" o0 ~

6 B( l. x  `9 q( B$ S(x - a) = x - a( t0 M8 n& A  u5 J, W/ p7 C6 D
(x - a) (x - b) = x^2 – ax – bx + ab( G+ F, N8 Z& R
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
, s% z- O+ P  `/ T9 [(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
& d% F5 ]7 h& h( ?如此種推，
  B4 A1 S3 g; Q% E. `! R( d% \8 B(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???) @7 R, y% K# {0 [5 P5 B2 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:  z+ N; ?1 {% x( Q* i, Z8 N% V( G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc0 w9 R, I3 }3 t$ o, X/ U9 }* T# O

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0 P7 z8 c# \" T7 ^) m[ 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:( y3 Y/ V' ]; Y1 v2 n$ g
咁難既=.="
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- g2 t$ Y5 m5 \) ?[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 o7 N% c/ O/ V* H+ CThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:6 {' u2 {* O7 V3 V2 b& ?
第一個答中有獎
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(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:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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[ 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:. \6 t) X, K0 ?7 |( g
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8 ^# Y& I9 H- B(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過3 M! g8 ]! I1 {% P& \4 f4 e* a
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.........5 s$ r8 l2 M) Y2 W+ L- m7 X6 j: }
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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 ]