| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎3 N% R% S& B9 w2 y+ @" a/ D

# X; d' G( n" S) Z9 g3 C$ u$ K, h# ~(x - a) = x - a2 N2 z( i# K( `; |; N! r
(x - a) (x - b) = x^2 – ax – bx + ab
- b; Q8 u0 F8 c(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 W5 j; W4 x& O$ ~5 a3 P(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 J  P* j/ p) i' T7 U9 }9 F7 R- ^
如此種推，
% P0 d' v. ~8 p; N. n(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ S: V4 k, s+ J$ |
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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
6 R3 B; I# }" P

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 v+ M+ X6 m( i/ W! D(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc2 Z9 i( z  J1 _( L- l
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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:
" S6 _. O. S2 O! T  Q咁難既=.="
) A2 B1 ~" }5 M+ y+ S; ~4 n0 m0 ]7 [) t
[ 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:; m" h: |3 E* O8 T4 ?
第一個答中有獎
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' E4 d6 B5 f5 v& O  J( R# `(x - ...

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6 w8 _/ S) O' N! 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:
: {8 a- Y* o; L' e, q. i9 I/ ^1 H5 Q( I4 |9 H& [2 ^/ P

& ~( F% _: M, ~& M(x-x)= 0 ，所以答案係0，is it?

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3 t6 w) \- z5 w0 d$ \# P; J唔似a.math題8 c6 F: H0 I% s" t( U
似IQ題=.=
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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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0 i- }; W, R+ X(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
  I. c0 U8 v3 s) X4 _: C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.........( y. \9 p0 D( c6 F6 I8 F' p: b

1 ]" @" Y. B6 Q4 Y) z" B: t這條問題，貼落吹水版，名副其實1 h9 N9 s$ w% A- P" E- B5 e8 W

$ u& a( r* t, V! f1 U  ]% A/ [" j: [[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]