| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, `* k& l3 X- H9 w/ D
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(x - a) = x - a
1 s3 M( g( n% P7 _3 U4 r# H(x - a) (x - b) = x^2 – ax – bx + ab6 Y. ^" X0 G3 W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc* J1 R) C) h2 k1 Z6 H! u
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 Q! z6 ^# W/ R
如此種推，% J; u; H  J- Z9 j" Z7 t
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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; H( Z5 h4 r' s, `% F- D" x6 r9 M[ 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1 O; A& S; Y0 [0 Q9 _

Originally posted by Triangel at 2007-4-18 01:26 PM:# H! h8 f* j+ M2 x* U
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc8 t& G/ h8 d& q' b
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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:
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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:
" u  v# `6 E  C第一個答中有獎
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(x - ...

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4 t) b. H( i; r+ h) x# D(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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) E, `! f* z" C- P% ]) P& P% @( C8 t(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題) G% V0 R! ^3 {% @
似IQ題=.=- m" S: v! x- o: W: [$ r

' S4 M% e2 K# Y+ B[ 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:
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) n% ^& ]6 D, j  x$ \5 R(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$ ]+ Z2 o' R, R$ 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.......... o  d. ~" N' i; R% G, `
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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 ]