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Triangel

第一個答中有獎8 D5 z4 F" R7 G  f: [

/ H: P( x: W2 V. ](x - a) = x - a
* W" z* R) c; L4 s/ J  g(x - a) (x - b) = x^2 – ax – bx + ab
$ w/ s' M" H7 P( N! U(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
8 G+ a9 i8 `! B- L( a7 U(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd8 a  C& k2 ?6 Z8 r
如此種推，' Q6 P3 {1 \$ X
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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* E* w* R/ O3 [[ 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0 z5 R) N  N% r8 k$ E# l

Originally posted by Triangel at 2007-4-18 01:26 PM:
" G* J- V7 J6 {& Z8 U(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- b9 _: [9 q: q6 Q

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' [, C  R+ E6 n5 J7 X% o& ^[ 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+ z- \9 Q: k# I( A, E' J
咁難既=.="
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[ 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:
3 G8 J: W" i7 j. W第一個答中有獎* f- q( L! J0 I6 U4 I/ P* Z8 r* t
, `- k4 y# t, O" M* r0 n
(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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& V: I  V+ Y' m" w+ K! ](x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
9 n) |# p# n  q; _& J似IQ題=.=
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" J, _5 j2 c7 a: d+ r3 `[ 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:
+ y9 t+ a  }5 [  a  B
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(x-x)= 0 ，所以答案係0，is it?

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0 [& I; T+ ^% A. Q- NBingo~

waikong

我係學校個學生會單張見過
4 S1 ~: j4 T$ }; Z" 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.........
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0 V- m& {% C0 b& @/ K. A3 p/ d這條問題，貼落吹水版，名副其實  ]. t9 K/ }( x7 e- V7 z
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]