| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎% U' J( I1 R. G4 g6 i- R
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(x - a) = x - a
8 Q3 q, D' I0 G3 Q  ^$ I(x - a) (x - b) = x^2 – ax – bx + ab: u  d6 x" M' k" i5 B
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 E' G0 I2 h, F: b& D/ z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd7 g7 z0 Z: R9 l
如此種推，' S, w& D5 R; j: E
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???3 {/ ?. h' e% y

# t, F; U& y* ~  v% r8 e% f$ A, W[ 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" I4 G" p: I1 u

Originally posted by Triangel at 2007-4-18 01:26 PM:; m5 B5 p, H9 ]( f/ e" I
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc  T% U2 H7 `- r# w+ s& V

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7 i% n+ X- K2 T& U: t[ 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:, o, R9 r' I/ m$ ?: _# O; f, {
咁難既=.=": u$ Y4 ?2 m2 H7 J9 a, F

* z$ T1 p% [0 e. \[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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& Z( X& h  j4 C4 p$ ~+ M' m1 JThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
, v# g& m) |) {% p5 ^. Y第一個答中有獎
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0 Z" J$ |8 u' K& W* N) G1 z' ?(x - ...

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. x" }2 m' b; ?0 N1 L- e(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:( Y5 B( u) n  N( r: d5 @, t
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4 K; M, `3 l; K* f4 D% M* B' z(x-x)= 0 ，所以答案係0，is it?

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: i1 x5 L) r6 U1 p. p# W1 _$ H唔似a.math題; _- d, |& ]/ b! Y6 r/ y7 o: T
似IQ題=.=; k. D6 S. E: A2 O( _

" p+ V: f$ k2 W6 @2 @! W' a[ 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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  m# p- X) c0 X/ S! SBingo~

waikong

我係學校個學生會單張見過
/ ]; ^+ c* e( U3 |* k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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這條問題，貼落吹水版，名副其實, T* @  Q) p6 f7 I0 z

1 y& X! P: h2 x$ x" D# J[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]