| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎+ P5 E6 \' Y+ N2 U7 F" g  \
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(x - a) = x - a
8 M" c2 ?* y. t# |9 b(x - a) (x - b) = x^2 – ax – bx + ab# P& g( |. z" ^* x! T
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc1 K8 T8 E' k: U9 M! Z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd- c' a9 m1 z3 J% Z7 Y$ g& K" o1 ?
如此種推，
! _) n/ @4 b1 z, V. w, U(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???) D0 n+ ?& j) I

5 N$ r" Q: c6 R. q' x3 b; 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
) E7 @* c9 q9 z  U* `1 ^( [(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, I* o% Q$ o: J% s
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0 i2 t8 l  j" B  i& c  v9 A[ 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:# A: A  m% p7 Z$ i* Z
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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( m: [% N' [5 U5 |9 ?3 |Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:* \/ i% D1 h% E2 t1 M. x
第一個答中有獎% |: H" H) G  @5 f4 y
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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:' U( R1 B, I5 t  Z
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題+ l$ E* a: D+ A4 }. u
似IQ題=.=
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9 @( ~7 B& X# b[ 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:/ L! I4 J$ P* ^( J$ v& O

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) e! B! T  B2 x) N- J$ s(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
) [6 D2 s, _3 z3 \; X- s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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! f8 S  `5 J3 ?2 {% r$ q這條問題，貼落吹水版，名副其實7 x1 b$ t( r# A# b
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]