| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎' p5 i9 O6 q' I! x$ |
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(x - a) = x - a
. H, Y3 C4 c2 E9 D(x - a) (x - b) = x^2 – ax – bx + ab
3 E' q: `/ C0 ^) ]0 Q) f9 J- J(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
: C' I- m0 e! c4 O(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd5 g8 I" j6 e3 y  l$ Z* f# n2 K. M
如此種推，
- t& X  h9 {. q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& q+ v7 l3 v: E! z

; e0 }1 O0 {6 u! N. Q/ e[ 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' B; Y' ?( o5 J5 e& W( v# I! V

Originally posted by Triangel at 2007-4-18 01:26 PM:
; U" I! q) V5 n! [- v$ I- L(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc( O, K* Y5 T+ N3 J( n1 p
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8 a/ @$ d; y+ A) ^/ ~% m4 W1 A2 D[ 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:/ d* }5 U( v% \/ l9 Q9 k& p
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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1 X$ ?) L) l) X  ?7 IThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
4 @& Q( p! I7 v5 N# _7 I) B! {3 q第一個答中有獎+ e2 `& D' b; q" z
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(x - ...

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; y9 H% A" g/ Z' U( i" {) G0 S(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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7 i' F4 D9 t$ E, z" D% f(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
1 |/ }# |5 K3 v9 i9 @似IQ題=.=8 D. P6 ?9 `+ A) M9 X% k

3 u  y% \# b/ f: W[ 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:/ v0 ~% f5 @9 w, e, `/ j8 k" j! K, `
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(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- _$ t" g7 p% J) D
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.........9 S0 V+ e. k' {8 t, E' f+ ^9 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 ]