| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎) Q! c& J* [9 d. `
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(x - a) = x - a+ ]6 j/ [9 W4 a" U/ v* R6 F$ I
(x - a) (x - b) = x^2 – ax – bx + ab8 _! y8 ]. Z/ s( C$ z; S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 K8 p% c; g$ A+ E  e2 i
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
. A5 @7 T5 n4 A. e& Y1 h如此種推，
8 j0 l+ j3 s0 }- w, O. E(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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& _7 u' Q9 t# \% ?  ?2 a[ 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:, V3 I: A0 ~% Q: u. a# b* W& r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc) {8 l0 a" t" g* ~8 G' C

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1 j1 Z5 m6 h5 u7 l  ~# T" g  Q: p8 d[ 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:0 {! r1 h* H% s4 D( n( r
咁難既=.="! u7 {& C$ h3 l" b$ Z

# S; {- `% ~% l: @# G5 P  p7 k[ 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:1 {6 ^6 _" u! d+ [
第一個答中有獎
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(x - ...

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0 D) z* g% r4 d& \# 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:
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(x-x)= 0 ，所以答案係0，is it?

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, n9 H" c  K2 X) x. g2 F唔似a.math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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+ ]* r" m5 E. ^2 r
* `; l* i. a8 V+ U$ e(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- I$ u. O5 m+ J  W: ~( E
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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, i5 g9 F+ H2 a$ p; Z. ?$ \7 P3 C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 ]