| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎. @4 w% U$ _" i% |+ j! f. d6 z
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(x - a) = x - a6 V  M. o! ~0 h/ {0 P& w
(x - a) (x - b) = x^2 – ax – bx + ab
; Q0 C3 U8 m. Y: ]' j(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
# E5 R/ [6 B7 I) }; C/ ?(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd% W2 b0 J. Z  ]+ ]
如此種推，; h5 U; G1 U' W( q% F3 g2 m
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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. S$ t0 a, B- v' P[ 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& C; _& z. n2 A3 m

Originally posted by Triangel at 2007-4-18 01:26 PM:
) F$ }! q( w2 \- {0 b' n(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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. r6 Y! m; [# }' h[ 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:9 e% O6 t- l9 p/ \
咁難既=.="4 F) u* {: V) z! t0 d

% g: V  H; q! F- |, C[ 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:
7 l, d  ^: O! X第一個答中有獎
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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:
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(x-x)= 0 ，所以答案係0，is it?

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1 k: R. H3 P6 P0 f: C6 p8 p; }( I6 [8 y* E. I* U% p3 U! g
唔似a.math題
, s: c' g. y% q0 b$ l, m: o0 w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:7 n" j1 Q' K/ F. w# G0 Q3 I5 o5 v' G8 s% g) K
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(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( N& E; H: H( E) ^5 b+ W
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.........: ]: t7 F$ p5 S- A' C, A: `
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]