| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, s. A2 Y2 q: b7 k8 x* p% j
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(x - a) = x - a
* ]' A  o  L( L" u(x - a) (x - b) = x^2 – ax – bx + ab
( g% X: E2 A- b(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc* b0 g  n" r: U: _/ C9 v
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
! @- g- [: ?& I" w9 Z3 I& s4 l如此種推，
  J  N, G) `. X, R3 i/ ?(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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9 y; |2 i9 j* G; L, c/ _5 B[ 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8 `7 n7 I& X0 u& t1 B; w+ ?

Originally posted by Triangel at 2007-4-18 01:26 PM:1 g( n0 L' z% o5 p7 j
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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# `# W( d4 h; M6 ?[ 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:# z% V( u% `# s; M3 e( `5 v' L
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:1 n. }3 u. ~( r, `/ ?. U
第一個答中有獎- t. S+ l# R1 @: \5 V
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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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2 S, H" K  }4 E+ U( T  k8 N7 f0 j" o唔似a.math題
. ~, ?/ C# Z" E+ x" u5 f似IQ題=.=1 I4 g4 D0 x5 e2 i! o

+ d+ s( e# T' u[ 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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(x-x)= 0 ，所以答案係0，is it?

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7 s$ X7 _) u' l- K0 e4 L0 `" TBingo~

waikong

我係學校個學生會單張見過
& g, U, ^( _, S* |2 a/ F; M4 l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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2 `8 E8 K8 C! Z- T這條問題，貼落吹水版，名副其實/ [8 O0 J6 [- b
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]