| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a9 v9 c& J  l' T  L7 w
(x - a) (x - b) = x^2 – ax – bx + ab
. |" J5 A6 I1 c( T, n4 T% Y(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc9 d8 O+ F! }) b# {: Y2 \
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd6 k* P3 J, e$ a8 `& x8 ~
如此種推，
+ R2 j& c: b  C( x* B: l( A% p9 j(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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0 w) z* z; S- r8 i% O" Q, P( G" o, q) l[ 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" [4 r# D" `* w7 V6 p* L+ {* \

Originally posted by Triangel at 2007-4-18 01:26 PM:- h. x: V& H( x& c* w5 M
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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8 e& x4 Q6 y7 W% S[ 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:  n& W+ k8 ]' l% }+ g9 B7 t
咁難既=.="
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4 q. {1 p0 ^- v. ^[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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1 ?( _6 p" [; c) i* U* VThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:! r! s2 l/ M& P' @& y; u7 i) J
第一個答中有獎) w3 A0 F. U/ Q9 H& a# p
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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:* ]1 o$ k& Y9 ~) U

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(x-x)= 0 ，所以答案係0，is it?

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' O  ~) k0 y) j) X: z; b4 }唔似a.math題' L) x3 {# T/ }
似IQ題=.=7 i* r& u4 y6 q1 Y) e

% e" O- k: C! |0 j# H0 B0 p[ 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:. {1 V0 {" Z& h& A6 |) Z' K$ n
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(x-x)= 0 ，所以答案係0，is it?

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8 o+ M" }/ F  ]" c4 GBingo~

waikong

我係學校個學生會單張見過
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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$ O& R9 `  s, E2 }/ \" j  O

, ?/ |. U$ F$ V[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]