sakura310

Filename: DSC01158.JPG
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- f4 Y+ F+ E, ?% _  M/ E2008-01-18 00:25:24 | 阿感 | 2/ F2 t  F% |. O5 c" h3 X
2008-01-18 00:24:20 | playbr2 | 2
2 f- ?, |  J1 x2008-01-18 00:22:02 | 但丁 | 2
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4 |# ^) @; P! e- _  \- `$ \6 f點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:  g; t, V4 O3 V! H6 C9 U
Filename: DSC01158.JPG- f$ w  a( J. t  f! E  T
Datetime | Downloaded by | Counts4 y7 N! u# z' X) n/ n
2008-01-18 00:25:24 | 阿感 | 2$ u% s" r/ N( U. I. \, A
2008-01-18 00:24:20 | playbr2 | 29 v& V% ]( Z- P' N$ J& B0 F; m
2008-01-18 00:22:02 | 但丁 | 2* E' p1 a; M! e3 T% W( J- n2 n

0 X7 w; S3 G5 N: `: ?5 M% {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
, r; c2 {, o1 |6 v3 H之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:5 R' J( Q, s. A. ~  B) U9 ^
Filename: DSC01158.JPG
  u+ T# s6 s$ e" p. `8 ~: P# D* }/ jDatetime | Downloaded by | Counts
  X1 q9 Y% i4 n, o2 u/ x/ H, u0 D8 T2008-01-18 00:25:24 | 阿感 | 29 ?2 l. Z' r) L8 M9 B
2008-01-18 00:24:20 | playbr2 | 2
7 x( [  H7 }! t  h% s# C9 n" @2008-01-18 00:22:02 | 但丁 | 2; v  J# y) c: y7 I$ C6 K9 Q
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點解大家都down兩次? XD

" [: z! B7 w+ Y5 d; y8 i* U6 `# U( o& f: J
快d捉我錯處3 ?/ Q/ d, n3 L1 A
話吾定我都打錯 + - 符號' }, X$ A8 v; V1 O4 B  ^
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
8 G2 ?2 B0 l( G. k# D5 b不過,c=101n哥度(解除n係正整數的限制,只是整數)
* h! l( k) g  I7 \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~)
- j& P& S) r0 X: ]9 P. |: t* y知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題! `% I) S2 w* c& H' C
但原先是不知答案,所以唔知有無失根
* ^: F& t# b' |; g- X3 ]+ H5 y# V$ H9 }7 L- j) m
有時見到題目都感到有點不爽
7 I' K/ B6 P7 n) y- y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
' u* D# m5 o4 Z; X8 u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....
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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:8 F+ Q& K5 p3 g. A
冇答案ga....4 [4 ~- v, i3 N* ?+ [

1 m0 J( n  u8 o! Z1 J7 O2條equation solve 唔到3個unknown ga....

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: g5 r5 X) l+ P3 |# jagree
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1 W) K8 c8 z0 l! F* m7 q3 F- s2 equations 2 unknows
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if 3 unknows there should be 3 equations , u4 ?. i" _" E6 |# I) u, e+ R/ P
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make it simple
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say
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# ~: D  p2 ~0 Z+ ^0 s/ E, ^2 la + b +c = 3
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2 [0 k$ f( e- R$ [: Y+ fa+b = 2
+ [0 ]$ w9 l0 [8 n
" [& h2 d, e1 v7 Bthen c is 1
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a = 2 - b
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* L" w& A: u! J9 X; _so 0 = 0 2 i, @+ I( p* S

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
" v: A7 {0 y  E# z冇答案ga....
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3 e: K- T; m& W" t( c9 ~  b2條equation solve 唔到3個unknown ga....

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' s+ u  i2 F3 g& i3 p8 F此言差矣~
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2條equation solve 唔到3個unknown ga
- G/ W6 h8 I0 e( N  ^) \8 D" I( @還欠一個條件,就是3條equation都是linear independent(線性無關)的' t! v4 o0 |- N0 t: h4 [

+ J7 F0 t4 j9 m3 U' S9 b6 z0 ?% y% t6 }) H簡單點說,多元一次方程就是線性方程的一個例子
- t- ^. l* U3 }9 C+ {) ?: p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, C, V9 o' D( Y7 U$ G

, M5 A8 n  n7 V( \/ a0 K" F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~)
9 O. @7 A& f! V; F1 Q例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解: ]! C; R2 Y) c
有興趣就解解看
% t( ?- B  N2 D  W8 G4 @) L不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# b6 C9 Y- U" M" c

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. I: I& V- \; z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:9 i% Q! r8 e) x( {9 \& w
捉錯處就唔敢當/ b  p7 Q% A! k/ X& H# ?
不過,c=101n哥度(解...

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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, B9 m! X7 Q2 Z; d- ^9 l
反而適當地調節一下 , 咁會理性好多
% p: Q2 o5 f5 M% b- t& W, U就好似隻game 由12粒珠 加到13粒珠咁& {( \- t7 r) e+ z' y7 P- C1 n
當''堂''好玩哂. n( b" @& ?  r

5 [" B5 S- K. b* \& ^# ^) g* ^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...

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已是正寫吧