| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a* l) A  z( W3 K: o) p0 |! {
(x - a) (x - b) = x^2 – ax – bx + ab
9 @$ j9 e" U' J% \(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc& @* p) h* e# w, h- ?2 Z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd9 {) X  S' s2 _7 m+ a3 T$ H# Q
如此種推，9 K1 v, R5 ^0 r; }! l
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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4 l! r( k# W" q' 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:5 q3 L, p6 l+ m8 q) T
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, F/ u4 e7 c. t# N/ O3 o/ w

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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:
( x# x" h% w. z& n+ K/ m1 r+ j" M1 f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:' ~6 G7 X  K  X- K
第一個答中有獎
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1 E3 S+ P7 H7 a. J. j. C+ ^% c(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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唔似a.math題
# Q7 J" ~& A, i. n1 y似IQ題=.=
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' N0 P5 W7 `$ N[ 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:  p- Z! c- N+ S, p/ F! x7 `- X" O+ M
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(x-x)= 0 ，所以答案係0，is it?

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% ]3 y6 @( T9 D' sBingo~

waikong

我係學校個學生會單張見過
: c3 _$ \$ E0 k( C; o$ a6 L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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9 Y* u1 q; V5 y. d* D) e這條問題，貼落吹水版，名副其實
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4 o- o/ I  F% l' W1 r0 {# v[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]