| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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9 b0 M2 T& v% W4 a(x - a) = x - a
0 W" u2 L& N( l(x - a) (x - b) = x^2 – ax – bx + ab  h3 s# ^% m; K* M9 Q6 e
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
# ^  s$ v. z1 x' O; T: J# a(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd/ m" |2 u) W# |  O3 k  ~
如此種推，
3 y5 z" C6 U) W2 A(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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7 p4 Z' S* |9 Q6 V[ 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:/ \% j6 c! @- q5 Q. s
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc: N# x) m4 V8 P) d

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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:+ G2 n, r2 o* u3 N; @- |- f; l) Z5 g
咁難既=.="
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' ]# V% ~9 Q. g" u# `[ 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:
6 K  Q- H+ D3 O$ {! o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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# V6 C) R4 S8 \6 b, l  W* Z唔似a.math題+ M3 S2 M9 T* `2 w/ ^; p  m
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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(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
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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.........$ L* d8 U$ W8 w( G' }
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這條問題，貼落吹水版，名副其實
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) b( B' j3 ~) T3 Q) J2 A  p  c[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]