| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎2 S' A" V. @& Q7 ?4 w6 m
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(x - a) = x - a: L3 e. j# o' j0 g- @
(x - a) (x - b) = x^2 – ax – bx + ab
( m+ `4 k( q" E7 q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
2 ~2 @1 C: u. _3 F* H/ V7 m(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd0 W1 P; n: c% w0 f5 c6 O
如此種推，/ F9 ?0 B. L: u4 ]# _1 ]
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???- \! S. V& o( K* E# e1 T. p

# z) `6 l& y' f! e7 I1 Z1 A[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
' t5 d$ [% a( Q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:# ^" N" ]. ]" N& `+ ]
咁難既=.="! H: P, g: {9 T2 k. p3 E9 Z# ^

  r* r" \+ x+ S  s4 F[ 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:
4 G' y: \* W6 U  K+ \6 H5 w/ R5 R第一個答中有獎% P- Z% ]7 [  p3 j' g

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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 M5 |  \( {9 j& j! `8 `7 r1 p
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% i! i1 q4 v) O(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題' W$ ]1 |/ i8 @% a% C
似IQ題=.=
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6 d9 E1 @& X, Y/ g' z[ 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:, \/ o1 \0 T) l9 }
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(x-x)= 0 ，所以答案係0，is it?

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9 _+ d" D' W6 @1 }* I6 @% YBingo~

waikong

我係學校個學生會單張見過
7 m4 r' S+ r0 J- I' C; r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.........  c6 m6 A: H0 _, D
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這條問題，貼落吹水版，名副其實
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& {' }  y* D+ ^$ @+ g( ~[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]