| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎' s* i! r# j, p. G3 w
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(x - a) = x - a4 [0 g! r: d& I1 v, W' c0 w7 u
(x - a) (x - b) = x^2 – ax – bx + ab$ |0 M( |3 e& F% c7 @# E
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) X: n+ ~; `; G" n; d9 _(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
6 Q* y/ g- F! e  G* Q( l2 v如此種推，
6 g& n2 x8 L7 D5 A3 A# i$ d( J& t(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???2 }* v3 f3 {/ j4 u/ l

  r1 n( m4 O8 D  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& T) O+ i) c) n) J

Originally posted by Triangel at 2007-4-18 01:26 PM:
! D* m# w0 Z2 N& L2 Q! |! R(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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& V( D* K) R3 g

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6 {# |" u/ A- m1 R[ 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:. C3 G& G) j! Q0 A/ ^! C* x
咁難既=.="
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[ 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:5 Q4 Y& Q+ j+ M) K# Z
第一個答中有獎
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(x - ...

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: B, w$ y2 ~$ I$ L' y5 ~1 S3 @(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:* ^9 M) s* e  s! w, D; y$ d. @
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(x-x)= 0 ，所以答案係0，is it?

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8 s$ U) X4 g' J唔似a.math題7 L) {  D4 ~/ }3 u7 J
似IQ題=.=7 P7 T- ]3 Q) E, ~7 Z5 }' `  X
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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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(x-x)= 0 ，所以答案係0，is it?

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% a2 a/ @+ V7 e9 Z9 Z) T9 dBingo~

waikong

我係學校個學生會單張見過) w# `( K6 c' Q" 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.........9 q( [& l# X* z

5 P5 h! u; [  D3 s這條問題，貼落吹水版，名副其實. K  A2 v  D) R' o

3 X+ l) @; I* [# Z* U8 u! n[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]