sakura310

Filename: DSC01158.JPG
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. J) Z  E( C& N0 G6 C7 f# q/ o( @2008-01-18 00:25:24 | 阿感 | 2
- `1 O% w- x0 n2008-01-18 00:24:20 | playbr2 | 2$ B& Y; _9 R2 \/ m
2008-01-18 00:22:02 | 但丁 | 2( t* \/ X- M& v# O  M  _
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:6 d) h- {7 l: H4 Z
Filename: DSC01158.JPG' G" K9 q7 f! H1 N$ ?+ g  N  f
Datetime | Downloaded by | Counts& w9 ]6 O6 l5 W3 J
2008-01-18 00:25:24 | 阿感 | 2# k0 a; B8 u0 q: l. O* `# C  Q
2008-01-18 00:24:20 | playbr2 | 2/ v/ A  R8 h' I- _! ?
2008-01-18 00:22:02 | 但丁 | 2
/ G4 w" \7 f! d) C( ~& ^5 y& x' m* h5 \% v5 A! Z) v( l! }" l
點解大家都down兩次? XD

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! D3 ~' J2 F* S& f) x我第一次開睇左2秒就close 左) j6 B3 Z9 E+ f! ~1 v! G
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:* v0 v3 d/ F! H5 c, X* W  G
Filename: DSC01158.JPG$ s0 u: z( ^4 S7 T
Datetime | Downloaded by | Counts0 E; Y$ b9 {0 l3 j6 H9 U) a) `5 W
2008-01-18 00:25:24 | 阿感 | 2
, g3 J. T2 ~* T/ Q4 H# H2008-01-18 00:24:20 | playbr2 | 2
: u/ R5 ?( w+ K/ w2008-01-18 00:22:02 | 但丁 | 2& q2 M  Q! f9 }
; M3 D9 G7 l" q) Y3 z0 e4 G
點解大家都down兩次? XD

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快d捉我錯處
, a. y' ]2 g, n  w3 m3 Y話吾定我都打錯 + - 符號0 Y/ X( k& f1 ~7 i
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
4 H. I+ E) J& N  C8 d9 `% [7 |2 ]不過,c=101n哥度(解除n係正整數的限制,只是整數)) d9 X/ C: }7 n
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~)
. W. ~$ n$ x) c4 d+ W7 W知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題- z. {* i& ?# B
但原先是不知答案,所以唔知有無失根2 \2 [8 _1 w* {) C
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有時見到題目都感到有點不爽
) K6 Q' h4 a4 U8 I7 K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  C7 F' j( X$ F/ V  `
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....+ z' b3 K" u2 p! k7 r

# i# n) ~( `/ h) i+ U6 r2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
* g; ]" [' D" Y) Y% T* N冇答案ga....9 l' Z. ^% V  p. S- N
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2條equation solve 唔到3個unknown ga....

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agree 6 E$ ~, \: m$ ~! ?0 b3 b

1 z0 N7 A7 t9 l( \* ~2 equations 2 unknows
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' w+ m" J& d+ tif 3 unknows there should be 3 equations - \. d7 l3 h$ ^7 o

1 L' A% e0 ]7 Jmake it simple - s0 V1 n8 t2 g+ \

( I( Q, @- V% T8 W/ c( Hsay
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a + b +c = 3
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a+b = 2
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then c is 1
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a = 2 - b
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, E; b2 P; ~; a# V0 }0 x3 ]so 0 = 0 1 ?; J# x) T+ Z1 o: [

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
" T, q: R. d2 M" h6 j0 g: i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~2 b/ G( w2 O: p) x, h$ z8 m

% j& U: s- S6 y% B  a, d2條equation solve 唔到3個unknown ga5 W% j% H# h2 W$ L. q
還欠一個條件,就是3條equation都是linear independent(線性無關)的5 r& i+ s6 L: U) ?" c  ~

9 Q: ^4 ~: v+ h1 D: u$ a; \簡單點說,多元一次方程就是線性方程的一個例子) S4 y1 E3 o6 d5 ]1 P' `: C1 B# w8 D
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  J, ]  N4 O* b

6 j7 U7 y) E& d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~)
& e) W0 X6 |0 v例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
1 b  a' p% A/ Y1 h有興趣就解解看
: j9 y( {$ o# ]9 D8 t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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  C1 Z: C% j+ b2 u7 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:% o! n  x& f+ Y  n- `2 B1 [( W
捉錯處就唔敢當0 t- \# L: E1 Z+ O
不過,c=101n哥度(解...

5 i; X: q: Y/ [
/ ]5 ~& Q7 E, W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
* O9 q3 V; W; T" j, o5 o, v反而適當地調節一下 , 咁會理性好多8 ]5 k9 f$ p8 ]/ d1 D& l5 d/ V
就好似隻game 由12粒珠 加到13粒珠咁" g( G6 h8 f. P# X2 H, X) ]
當''堂''好玩哂/ ^4 d. L$ {# k9 w9 y

7 N" A- [0 @% s! Gp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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% c; A7 }) V" f" w/ x* ^8 Bp.s. 求''堂''字正寫...

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已是正寫吧