sakura310

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2008-01-18 00:25:24 | 阿感 | 27 S* }! E7 k( `$ j8 m9 L
2008-01-18 00:24:20 | playbr2 | 2
! z: j1 L- E" R2008-01-18 00:22:02 | 但丁 | 22 z  I" s4 H' n

! T8 t8 l; A" ]" p/ P, A4 _( k點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:6 I8 R/ \$ f! y: I9 B
Filename: DSC01158.JPG
- l4 l+ m0 `4 }7 k0 h1 z1 ^Datetime | Downloaded by | Counts0 C7 c- K) z( O  {8 w; s# p; n
2008-01-18 00:25:24 | 阿感 | 2
" z; O& n( ]4 \% e7 s2008-01-18 00:24:20 | playbr2 | 2
4 [2 V% R" H" i( a  j. Z5 S2 T2008-01-18 00:22:02 | 但丁 | 2
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$ n9 `. F) `" Z1 c0 c( ^點解大家都down兩次? XD

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( o# l( ^6 V$ P8 o% y3 K, G4 z我第一次開睇左2秒就close 左( x6 w1 x; D" }- E$ r
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 l. u/ z( D( R# j8 F; WFilename: DSC01158.JPG
* x+ E3 }7 f: J7 J/ g" b* u( ODatetime | Downloaded by | Counts7 U3 N+ [1 l& r$ G
2008-01-18 00:25:24 | 阿感 | 2
0 l* I# B& B2 ^' x9 }0 F2008-01-18 00:24:20 | playbr2 | 25 Y2 `: S: g& \
2008-01-18 00:22:02 | 但丁 | 2
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9 P0 G2 H4 s3 @1 p點解大家都down兩次? XD

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快d捉我錯處
1 _, Z2 z5 E! O, @4 a) j話吾定我都打錯 + - 符號4 [: |. o! i7 T: \; ~# O
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
, \5 a2 m/ C  k2 b) Y不過,c=101n哥度(解除n係正整數的限制,只是整數). l. j( Q  t" G
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~)
; `) V/ A; ?1 F6 ^: P; B/ q3 C知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題: i" j  r2 H7 K
但原先是不知答案,所以唔知有無失根
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% Y7 n+ h8 G8 O8 |1 g, M1 E有時見到題目都感到有點不爽# V( w$ W( S$ D! |; i" T
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3 [/ L; I7 @- a  ~& w# B
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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5 N6 Z2 O" x2 f0 U  h6 V9 B, k2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:/ V0 b% R0 H9 i) h/ D4 z' {7 A
冇答案ga..... ^. q: M# p+ Q

4 C# ^7 G$ d0 ?2條equation solve 唔到3個unknown ga....

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agree
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0 f( W; [( R/ ]/ a- ]8 f2 equations 2 unknows
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3 b3 O  `+ |0 f6 n4 `& ^0 c' g6 zif 3 unknows there should be 3 equations ' v: S7 v+ `! r! i

4 r! m1 z+ g& r7 k  r+ I2 [make it simple
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a + b +c = 3- A8 i2 b9 L: i5 A1 H

; p* R* a# e. K: o, U3 |5 {a+b = 2* ~* V" b1 O' J, k0 v

( f: p+ w6 H  O# H9 O1 ]. zthen c is 1 , c& K% M7 _$ e2 Z

9 {( @. x! b& W2 {3 t" ua = 2 - b ' s8 B  M' Y5 T6 R, W; Q; }9 O; f
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
- u9 Q/ h, q7 \2 M7 F: _冇答案ga....
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2條equation solve 唔到3個unknown ga....

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此言差矣~% P' A; j& B) ~
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2條equation solve 唔到3個unknown ga
% s. u$ f! H8 z1 F還欠一個條件,就是3條equation都是linear independent(線性無關)的
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0 E8 i1 T9 ]' }/ g2 m3 u0 Z1 v簡單點說,多元一次方程就是線性方程的一個例子" o, [( ?1 v& @1 t/ n
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
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6 ^; `! W6 R6 ?2 V7 |( Q5 }$ \: o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~)5 ~7 L5 O  Y$ R  @. V5 H
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- E" ]9 M5 p( a7 Z  R; H! E+ J有興趣就解解看
) K% F, o- k4 [. i不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ c$ j- v1 q) @' @% ^+ E
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( J# q  `/ ^$ \" ]: r7 Y% |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:( e5 x% t! ~5 S/ J& f
捉錯處就唔敢當
. \  i# }. x+ s  @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; u' Z" F* n: v! |" s9 [3 L
反而適當地調節一下 , 咁會理性好多
0 h8 V( M6 f+ @0 k% o* @就好似隻game 由12粒珠 加到13粒珠咁. \1 C+ d! u" Z. ?8 J/ D
當''堂''好玩哂) l; z$ r0 P# U, ^8 g8 E: M
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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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/ s/ q6 U, p, w  f5 [  P5 Bp.s. 求''堂''字正寫...

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已是正寫吧