| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎+ X- U: m5 }3 |0 W8 J0 l
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(x - a) = x - a
6 G$ [# F" M8 n( m(x - a) (x - b) = x^2 – ax – bx + ab3 r( i6 |8 b( p& o9 `
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, n$ m" E' v" R3 j5 F8 Q7 Z9 y
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd  x$ k- H0 l  _% s4 a9 o
如此種推，
8 W7 p5 i7 T) O, F(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???9 S- b! G( L4 Y

; i/ a) l5 ~# E. t[ 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" E3 g) k: ]8 J/ d2 ?3 w0 O

Originally posted by Triangel at 2007-4-18 01:26 PM:
' `0 e6 B1 c* p(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:' d. D- M" s# ]. n
咁難既=.="2 k; i+ \5 o4 C' z

# L  k/ A  {% o[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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) ?6 o$ d8 Q! w# U/ z3 `) CThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:3 m3 W+ {# b1 K9 f6 x' k
第一個答中有獎1 H' b7 ~: f" g/ n

1 z- X8 a6 H1 V$ Y9 G4 {  _(x - ...

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0 {4 Z1 Z5 u/ b* N(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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" S5 V# _% z8 b5 j  j5 \, L  y(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* c- D( y: y+ O# ^
似IQ題=.=& o; w) i" I5 s% N
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[ 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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" Z: P: q0 y' b# ?. B' `+ w(x-x)= 0 ，所以答案係0，is it?

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. m) j2 R9 N9 L5 h: QBingo~

waikong

我係學校個學生會單張見過
. h6 E1 }. ^9 I% Z+ ~5 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.........% z% }+ U' I+ @
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這條問題，貼落吹水版，名副其實8 Z# l9 y/ l. S$ p- B
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]