| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a: p" z7 ?% J: y$ Q- G
(x - a) (x - b) = x^2 – ax – bx + ab
6 A$ s7 l' |! O7 G" p7 d(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
( p0 p3 g/ \6 H2 v. V(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* F( R, j: g/ P8 B. [) i: l  m
如此種推，1 H7 u  y5 X9 @4 u) H% t
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???# v; a  m. I' q7 z5 F3 _
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:$ y6 C' S- o* b2 o9 C+ Y% o3 w4 h
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc4 H" F. C8 x7 i
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; i+ z) t" z5 V  Z# H/ Q[ 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:
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- }* ~  J  ~& `/ h4 g[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! X5 y" ]4 o! C9 B  cThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:  N; x* ^# ?4 V2 K; d
第一個答中有獎
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(x - ...

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. t& \. S; b2 t8 }" l. U(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:$ ~$ F1 ~1 c( y  d+ Y
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' Q! ~% |% r2 I9 I: l* V' L2 a$ O(x-x)= 0 ，所以答案係0，is it?

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+ r" }$ E- c& p4 f+ m  }! @. q% [唔似a.math題, h' ]% S1 U6 R- q8 k3 J
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:( I7 e4 c* ?% r; Z: M- ]- O
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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( o) t/ K( ?; U
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# l% M0 a) x; V7 ^
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]