| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
' s4 g, B4 F/ s( y0 t$ c! ?(x - a) (x - b) = x^2 – ax – bx + ab
- D8 \4 f! m1 q! d- e$ t7 j(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, d0 m2 o* Z- i1 l+ a0 ~+ F" q& s0 s
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
2 h/ q4 U# w5 a4 D1 w如此種推，
$ a3 w# L1 a: X' {' I(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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2 S9 K2 N# a* ^0 c$ |: X& u

Originally posted by Triangel at 2007-4-18 01:26 PM:
, W+ H5 u8 V/ J! ^5 U3 ^(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc5 @/ {' R, [* Y) X9 J! Q! `  R
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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:
3 J2 l" J% a. B咁難既=.="& A, c% m4 m. b& ~

# r! U3 Y) H# G/ @[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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* R7 G/ @, O. B9 m+ S; XThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:' p$ J) N0 k; [& N  C0 B+ j
第一個答中有獎
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(x - ...

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. K$ Q# ?, a  a# u(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:' k% ~' f7 B! U$ T% Y- h, Q
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+ j* F6 a* t8 G( D( h' m3 f(x-x)= 0 ，所以答案係0，is it?

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2 v; v6 x8 n3 `) u( V3 E8 ?& _) |' `' v$ ?2 W8 p
唔似a.math題
, a9 ^. u! d# p5 _! A似IQ題=.=8 B. `/ Q9 S. y: |

# z; a9 y3 u# A- j8 n' Q[ 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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Bingo~

waikong

我係學校個學生會單張見過; l) S! z- h4 U% r3 E6 }! H
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.........8 o' K, w* O' }4 {/ L7 j

3 q; _' G$ l0 f$ X; P3 ^2 G0 B( l. Q這條問題，貼落吹水版，名副其實
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  @8 \6 \  q" R  C% X[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]