sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2! A5 t5 k8 C6 f' }: c" |6 X
2008-01-18 00:24:20 | playbr2 | 2  _+ e# E; t8 I
2008-01-18 00:22:02 | 但丁 | 2- l- T4 h, I# t( t7 d9 L: v6 k

% ^8 H; e# m# E- s9 j  B& W點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:6 a7 N9 h, s' {1 D# K7 ~
Filename: DSC01158.JPG) e7 e$ F! e2 i
Datetime | Downloaded by | Counts3 ]: M3 X: x2 K% R
2008-01-18 00:25:24 | 阿感 | 2
+ X6 z* U, W( f  I& |" t! T2008-01-18 00:24:20 | playbr2 | 27 z: `  ?$ j$ W3 ]* N6 G( G2 a1 \
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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我第一次開睇左2秒就close 左; A: V( J9 y5 R( K9 ^, i
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
9 L& h+ U8 y. D( u/ Z' E. w" cFilename: DSC01158.JPG  r( D. n% ]& Z" R
Datetime | Downloaded by | Counts# K+ _# p: l) N7 R% M% a7 q
2008-01-18 00:25:24 | 阿感 | 2) i! A" [" P3 w2 X, {$ u. E% s# e
2008-01-18 00:24:20 | playbr2 | 2
/ a0 v" C2 `) G8 }2008-01-18 00:22:02 | 但丁 | 2
4 _) i' m4 H" Z' y" J+ k2 P5 \2 V# Z5 f8 }
點解大家都down兩次? XD

9 F: E# v6 e+ g7 N7 v8 b0 d3 y; u7 f4 Z( `
快d捉我錯處' p9 b: u/ P% V! e
話吾定我都打錯 + - 符號
0 @4 Z3 }7 I1 t) t& k2 \2 O係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
5 `  _7 I2 b9 _# q& U不過,c=101n哥度(解除n係正整數的限制,只是整數)
3 V% j/ J9 ~5 ^1 @6 z& B; j1 ?8 @就一下子限制左c一定要係101的倍數(好像看懸疑片,突然劇情說出一些事前沒提及過的線索,不爽~)) ], ~5 a6 G1 ?, {2 B' p: s
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題2 q) F; W4 }* |% D7 z% R$ a! ?! p! i
但原先是不知答案,所以唔知有無失根* l% p& _" P0 t& @6 A( w/ M

' S' X) X3 ?' _5 X; k+ W; o有時見到題目都感到有點不爽
9 g' y3 t. i, I/ o' L題目所求的答案是整數,正整數,有理數,實數等等應該說清楚
. c( z$ G& [" ?" @& P9 _4 L0 Q有些題目,整數解和正整數解分別好大的說,要找出整數解集有時可不是件易事= =

cutec

冇答案ga....3 ^  T* h2 ^2 z+ ?
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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
+ O+ A3 N; f; p% \0 j9 Z冇答案ga..../ |) |, D" ^; o6 N% S; D! P, |

% {% b% L! ^# K# `0 P( |2條equation solve 唔到3個unknown ga....

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& c+ l/ Z+ n  q4 L+ v: F: magree
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- F  k9 N  H& ?1 ]. `1 W- J2 equations 2 unknows
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if 3 unknows there should be 3 equations
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- ~5 p) S1 i2 jmake it simple ( t( I& X% _% D! r. C- P

/ W& u# J, x" m: u. e8 a  ]+ {say 6 t2 o/ r4 s5 d# b& l
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a + b +c = 3
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2 h8 f% e% k+ ~3 W4 l9 [' Sa+b = 2# i- ]1 H" P9 I
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then c is 1 7 Z* b+ t* Z+ C
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a = 2 - b
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& o8 X0 w5 j2 \2 o/ e0 Uso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:& r* K. F+ t+ {: M) u
冇答案ga....4 _0 B' b7 m& W$ h

- Z) {! }* Y$ v! ?" o4 P2條equation solve 唔到3個unknown ga....

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此言差矣~# h2 i6 H( x9 O0 ]/ x
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2條equation solve 唔到3個unknown ga7 N4 X9 @: @* I( m5 P9 Y# l: Q
還欠一個條件,就是3條equation都是linear independent(線性無關)的, ]: O4 ]8 k. F+ o/ M7 |5 \  r* f" O

* f1 D5 y' w6 `( I- m' Y8 J簡單點說,多元一次方程就是線性方程的一個例子
# q' R% w; x2 P5 r在這情況下,當然是想求n個未知數,至少要用n條線性無關的方程( V: }+ p8 l) e; w5 h' ]
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如果不是線性的話,有機會1條方程解3個未知數的(這不是每次都可以的啦~)
# [. s' \( F* x2 E! f6 d7 `% [例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解$ m0 P" ~8 ^* X: C! N5 E
有興趣就解解看
2 D9 R* L8 u' z5 c- K/ d) x不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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不懂的話就問playplay,佢會知答案

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playbr2

Originally posted by sakura310 at  06:47 AM:. d& ~5 J' m+ U3 l
捉錯處就唔敢當8 l; g9 K; r4 {7 d+ t6 ^7 u7 Z9 k3 e
不過,c=101n哥度(解...

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' g) [1 I" }6 B, }0 k* R都係睇餸食飯姐 , 無理由因為題目冇同你假設就下下大包圍架
( E& U5 }' J0 |2 T0 v& d反而適當地調節一下 , 咁會理性好多# @7 {; c+ s. U( _
就好似隻game 由12粒珠 加到13粒珠咁
) `% u. s) E9 m: {( |當''堂''好玩哂' R8 }9 q3 x4 T* K
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

" _& ^; h+ x, M已是正寫吧