sakura310

Filename: DSC01158.JPG
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5 F6 t: Z2 x- U' ]2008-01-18 00:25:24 | 阿感 | 2
3 q; B; ^) [( b$ g* W' b2008-01-18 00:24:20 | playbr2 | 2
( c: @. m- g% S2 Z2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:  v9 N  ]2 T* l9 I0 f1 O$ ^2 K# g9 g& x
Filename: DSC01158.JPG
4 _$ C  m6 L, r: K& ~Datetime | Downloaded by | Counts% e5 w* `7 ?% f# i# C0 @% n
2008-01-18 00:25:24 | 阿感 | 2
, I) r) b  u0 g) t* G7 |2008-01-18 00:24:20 | playbr2 | 2' T  B# u$ U3 k4 A& [  o
2008-01-18 00:22:02 | 但丁 | 20 }. }) c5 Y5 C- a: c. i

6 o! L7 i! K8 a/ K2 ?6 Y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8 F/ ]) X, @$ S+ c
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
0 s) b# ]0 s) W9 m# CFilename: DSC01158.JPG
( o* P0 q4 e+ X2 @* C2 W% iDatetime | Downloaded by | Counts+ }3 c8 }+ |: k* }& G
2008-01-18 00:25:24 | 阿感 | 23 P+ S% N6 _/ Q$ \' J) Z4 e
2008-01-18 00:24:20 | playbr2 | 2" x- D+ b( j0 `0 W
2008-01-18 00:22:02 | 但丁 | 26 U: F& ^9 O" l" D# N9 A

, H5 n3 O5 \4 a. X0 o1 b點解大家都down兩次? XD

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快d捉我錯處, p$ @  l1 `3 _, F2 I' D4 J
話吾定我都打錯 + - 符號: _1 B8 Z/ R5 r- ^9 d4 {
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當) N8 }7 P0 q$ A  t* ~  }/ }* K# y
不過,c=101n哥度(解除n係正整數的限制,只是整數)6 U7 q4 S" ]) q; G/ I. S1 k. L+ o$ y
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 H( r) M! n: e9 Y# X' r' I
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題2 i1 z+ s6 \" W7 x$ ~4 c8 s
但原先是不知答案,所以唔知有無失根
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8 W% i( f6 c- P+ @) l7 _有時見到題目都感到有點不爽
. G' z0 L5 K5 A" v7 R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
1 [" \& j6 m& L$ w3 |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:
- n3 ~! X' R+ j+ ^冇答案ga....1 _! I' C0 r( D- w* @5 q' Y! h  Z
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2條equation solve 唔到3個unknown ga....

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  s/ T( ?- M0 {: N; D/ W5 U2 equations 2 unknows: |0 ~% J6 Z- O+ s4 J

2 C& m4 b; V1 `0 ]$ Lif 3 unknows there should be 3 equations
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make it simple
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say
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a + b +c = 3
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; n' v- Y% k/ Oa+b = 2. M2 [! I/ n1 m0 o, I9 Z: _
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then c is 1 2 `/ i: i, L, u) m; |0 `" o$ V

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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
, U8 f) E% S) F7 ~: y冇答案ga....
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% b; j2 \9 _/ D  Z2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga
. u: e8 ]  ]1 j0 j還欠一個條件,就是3條equation都是linear independent(線性無關)的8 c1 m, z! u) f; h( \

5 A. Z4 b. i9 H$ x5 C簡單點說,多元一次方程就是線性方程的一個例子7 t) c6 P% Z# g
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% Q% n/ J- m0 `8 ]8 o# L

) r' v# Q* W% m$ `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 X% v& `: _. Y- T$ B5 b例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解' q+ t+ ^( o- g
有興趣就解解看% ]. I% v3 Y% X0 S2 J- C# G& Q: |
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:( Q  Y* M& m# z  ^

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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:
! ^5 I2 k& m( X  z9 L& Y  ~5 u捉錯處就唔敢當
: |! s$ z  h- ]% T. O( u  V% k5 b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
- R+ H) W! b/ k( x反而適當地調節一下 , 咁會理性好多3 G0 K- A/ p8 ]
就好似隻game 由12粒珠 加到13粒珠咁
, |* s* E- b  Q* H: x/ G9 m2 ?! E當''堂''好玩哂3 Y; y5 E3 |1 a# O4 A$ u( L9 Y
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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...

% ]) b; z! W- C: I已是正寫吧