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標題: | TriTri | A-Math 加分題 | [打印本頁]
作者: Triangel    時間: 2007-4-18 01:26 PM     標題: | TriTri | A-Math 加分題 |

第一個答中有獎8 U. y5 s1 r0 D

; u. P$ \6 ]0 c$ Y' ~(x - a) = x - a
+ O. y7 y; D9 s0 Z4 T(x - a) (x - b) = x^2 – ax – bx + ab- T& G3 f& j  L; l
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc# v9 |- y- u1 B# ]7 M3 ^- _: S
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
# M3 i/ y$ ~. u) W如此種推，
6 D; ]- [* \/ w: _/ `8 q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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' _2 z* u6 d. }/ T! |3 B) ^; v[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]
作者: 大大    時間: 2007-4-18 01:41 PM

點解你個問題好似有d問題
+ u& j/ \% g: A
Originally posted by Triangel at 2007-4-18 01:26 PM:
* Q/ a6 ?1 r/ I8 s9 i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]
作者: Triangel    時間: 2007-4-18 01:54 PM

Originally posted by 大大 at 2007-4-18 01:41 PM:
' S% J& u2 J; t' B. L咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]
3 c1 O- y/ B" U
: |$ o3 z8 i. F- p. g% FThanks! 更正啦
作者: littlenic    時間: 2007-4-18 01:54 PM

Originally posted by Triangel at 2007-4-18 01:26 PM:
: D$ _8 ?/ n3 {+ P1 [第一個答中有獎
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5 j; B& z% O; j(x - ...
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( H) z/ x  e! L0 k9 @& r6 \  a(x-x)= 0 ，所以答案係0，is it?
作者: 大大    時間: 2007-4-18 01:56 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:1 d+ O; F$ b3 a3 `! F& S/ O( q

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6 m" ]: F& {0 x(x-x)= 0 ，所以答案係0，is it?
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1 a4 a5 a' f: y+ |! v! l9 T6 Y" ?& ~. Q8 _3 e
唔似a.math題
0 F" x  T- |3 d' V似IQ題=.=5 t+ g9 j/ R5 `$ R
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]
作者: Triangel    時間: 2007-4-18 01:57 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:
# L  i0 p$ X( {6 t9 [. [
( S6 a# y& S7 S! b+ C$ {! U* ]
* \& q/ V4 N3 N* x0 _1 d(x-x)= 0 ，所以答案係0，is it?
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Bingo~
作者: waikong    時間: 2007-4-18 03:53 PM

我係學校個學生會單張見過
6 q/ m" ~$ D, [諗左一陣先諗到
作者: playbr2    時間: 2007-4-18 04:00 PM

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
作者: karen0123    時間: 2007-4-18 05:50 PM

(哭)~~~~~其實我都知係0.........
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- W$ c0 h0 h# R$ w& g5 y這條問題，貼落吹水版，名副其實' x1 Q( ^# [% L/ ]
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]



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