sakura310

Filename: DSC01158.JPG
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; l6 B$ ~  _+ I$ t; F9 a2008-01-18 00:25:24 | 阿感 | 2* H( ^6 C- M1 i9 h! l" [8 O6 `" U
2008-01-18 00:24:20 | playbr2 | 26 D8 B2 W# K/ M( |- @
2008-01-18 00:22:02 | 但丁 | 2
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; w6 T. T' o) M+ I1 u" E! \/ q點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:4 C+ W' u# l/ Y' {4 }
Filename: DSC01158.JPG; Q' z4 v+ W. _+ @
Datetime | Downloaded by | Counts9 T% \% V, S  [4 `) v
2008-01-18 00:25:24 | 阿感 | 2
3 Y( j! ^/ H& k3 n2008-01-18 00:24:20 | playbr2 | 2
, E8 X: {: T, @! B, y1 \; I, K2008-01-18 00:22:02 | 但丁 | 2# A* F" i+ g, G. ?. q) Q

; t& \; L3 j, q/ d! f; p/ r  P, ^點解大家都down兩次? XD

9 ^( d7 ?2 \* D3 Z+ w7 x0 y! A" n+ g2 Z7 K: e8 h
我第一次開睇左2秒就close 左
9 i$ l. F9 x1 J, J3 s之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:; s) H# ^. P+ \8 Z+ o, i/ \
Filename: DSC01158.JPG0 I' j' m. l0 v
Datetime | Downloaded by | Counts2 G4 J/ x$ e4 L( \4 X0 P) b2 Q
2008-01-18 00:25:24 | 阿感 | 2: i# D+ ?& b* x: \/ j% I. y! R
2008-01-18 00:24:20 | playbr2 | 2" Y% b  c) X2 Y! k- k! L* |5 G
2008-01-18 00:22:02 | 但丁 | 2
. A. v- R2 [9 C' k6 O4 l
" J  E' k2 |6 O  b( D點解大家都down兩次? XD

3 U& `; {4 y5 Y1 P) b. n! |. A9 E. K# Z6 \. e7 J
快d捉我錯處
4 j2 u' f8 \0 c* P0 C3 M" x話吾定我都打錯 + - 符號$ r- |, w0 A* j6 W) t
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當8 R2 T, V5 x8 E4 e6 K8 Q: P4 n
不過,c=101n哥度(解除n係正整數的限制,只是整數)
: l; G0 x* e2 J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~)  o) p( d; _' l( d# @
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題5 D% P# h0 T7 Z& c1 q: F
但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
2 S! O2 b3 ^3 M6 i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+ f& |1 l3 B( R1 n
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....7 E8 ^& \; ^( N5 K7 I9 B8 e
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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:
$ e4 |2 D" C0 n  L! k8 X  A冇答案ga....# Z, ^. T6 M+ W0 j, d- B

+ ?. ^# T1 \+ s' i7 e% E2條equation solve 唔到3個unknown ga....

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- @9 R# y2 j; c. A8 ]  ~agree
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2 equations 2 unknows
2 G* u/ ^' z1 q9 q7 ^: Z' @! U6 _
' k0 n4 s% R( j+ }1 {7 F, eif 3 unknows there should be 3 equations
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# Y! s' ?, P, Smake it simple
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7 j9 c  @+ R+ o$ n! P* ]; I+ c
a + b +c = 3
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3 ~! G9 E( G$ h4 V+ k- Ta+b = 2! K3 Y! @9 y% J( O. o" `
, v. H! A4 S  ^9 z2 [5 c
then c is 1 ( y0 [8 \1 @2 c1 D" d+ o) F: C
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a = 2 - b 7 @" r! R4 x8 p5 c

: d. @# J. Q% U# T, w7 Nso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
% t& }5 I. K* ^8 H冇答案ga....
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2條equation solve 唔到3個unknown ga....

6 d6 u8 d3 d/ K$ p4 p$ Z8 i, S# i

3 G" Q/ r% b) O此言差矣~  u" t& s& d" K

; v0 L7 t/ v6 c- d2條equation solve 唔到3個unknown ga, Z/ p7 l2 ?6 g: x
還欠一個條件,就是3條equation都是linear independent(線性無關)的9 e4 f- g. ]6 [8 u, H: i# Z
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簡單點說,多元一次方程就是線性方程的一個例子
, m$ y6 J: ^4 h* z' v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5 F" y7 ?, L5 j- H  i

: z6 O: M6 Z/ b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~)
0 Q2 C/ U. T; x5 P& B7 t' e例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
8 s  ^3 c9 D5 Y- x3 b+ @有興趣就解解看  {% U* ?, F  o/ a
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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5 K0 L  V. j6 N; V, ^& B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:% g$ h( p' a: j0 M; e
捉錯處就唔敢當
+ l/ d. [9 b& U) f7 ^7 M( v4 Q不過,c=101n哥度(解...

& \6 G& r& W& T* q* K6 A2 G/ ^$ G& l- Y4 Y! q/ d/ E
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
7 }* h# s( Q' Q6 `- e; [反而適當地調節一下 , 咁會理性好多
: \0 c( A: j9 o$ t. C. \就好似隻game 由12粒珠 加到13粒珠咁& e* l$ x6 S9 m4 \  R
當''堂''好玩哂8 n' Z5 B5 |; L0 F
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:! N, @$ N- D# d6 C0 l0 Y) ]$ r

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p.s. 求''堂''字正寫...

) v. h$ {% o2 v" N已是正寫吧