sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2. j' K6 e1 e# C3 @6 X. r
2008-01-18 00:24:20 | playbr2 | 2% i1 q% Z. x5 [2 R
2008-01-18 00:22:02 | 但丁 | 2
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+ D" c  }+ s9 J, {0 T( R點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:8 z1 i% L) A" z$ V! {
Filename: DSC01158.JPG
  Q  T+ b2 l$ T) D1 @# GDatetime | Downloaded by | Counts
$ h" W8 i$ }: `# a+ s- r2008-01-18 00:25:24 | 阿感 | 2; I# y  @+ C& K( s% ?& g5 F( d9 c/ ~
2008-01-18 00:24:20 | playbr2 | 2
0 G$ B( _# z/ ~, n* a2 _( f3 g' c1 }2008-01-18 00:22:02 | 但丁 | 2- }- f6 c& ^2 q( x* E

$ R  G+ j* V9 `* P  B9 X5 }7 X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/ t. ~; n  x* }; B
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* r8 M( M* }/ \. M& w9 d6 UFilename: DSC01158.JPG
! y/ t2 Z' P( a: S& ^& IDatetime | Downloaded by | Counts& F! R- \" Q+ \) w
2008-01-18 00:25:24 | 阿感 | 2
+ I: a# g( i6 Z8 m' w2008-01-18 00:24:20 | playbr2 | 2
# J/ `1 V0 p: r! K1 y2008-01-18 00:22:02 | 但丁 | 2
  |) l3 H! ~- M" V
+ o2 G4 U! `( P. m/ @點解大家都down兩次? XD

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快d捉我錯處+ H7 C, M/ Z9 n- C9 H* Z  V
話吾定我都打錯 + - 符號
, Q+ m% k6 a8 X9 M9 }! _( S6 U& D係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
$ V  E& O: c; ]2 j. v不過,c=101n哥度(解除n係正整數的限制,只是整數)
: n$ g2 x, o" e. A% 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~)
- ~3 R1 Z* Z9 V' z# J2 G8 k知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題6 Z% A/ F7 p5 c' W5 t% j
但原先是不知答案,所以唔知有無失根0 B. o. B; v- n" O$ N& ~$ K
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有時見到題目都感到有點不爽
! @( `3 c) s, [' s* 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
( O. ], S# L: t' ^6 ]0 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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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
7 ]! ^% _, {7 b2 |冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree # z9 l( y3 k. b6 C5 S

9 ]6 B/ U6 `9 R9 N2 equations 2 unknows
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if 3 unknows there should be 3 equations ; B0 ~: Q% J1 r! z0 l: t6 p* x

% ~- k4 P% B/ s& M; e( P* b8 vmake it simple 6 x9 U9 y3 Z9 l
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say
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a + b +c = 37 p+ I" f  f2 q0 Y' D+ }

( t- j( @: v3 X5 v2 Fa+b = 2( u7 @, }) M. [  o& _
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then c is 1 ; h; E4 t/ A0 B3 f& F

5 V  g- ]' k1 |0 _9 {; ]+ ^a = 2 - b
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: S) I/ B6 m( X4 Iso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
% p' G* Q3 Q3 @, s冇答案ga....1 ~9 j5 m1 _7 q
# r& f( F) H. M% t2 Z4 V, @) E$ x
2條equation solve 唔到3個unknown ga....

2 E6 r) @% B& i5 ~9 f

! \2 q8 I: _- N: V此言差矣~
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; ]+ P# \$ Y/ D+ m9 l" o2條equation solve 唔到3個unknown ga( d7 q; o* f$ D7 {5 f' p2 r
還欠一個條件,就是3條equation都是linear independent(線性無關)的; ^7 ^3 J& z2 W( T* H
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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% O8 _4 a: N& a* o# F' `, f
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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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~)) a# h- @4 j, s0 g/ _: c6 b
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解- r: M- }, W& y6 T
有興趣就解解看
8 p; s5 p5 P4 Q# U% K  U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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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:
3 c; _% ^& ^: b/ ]3 b+ B捉錯處就唔敢當8 ]7 S6 }. t4 k. z. [' _, q4 m
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
% |9 w6 m: G+ S) l9 C' B% @! i反而適當地調節一下 , 咁會理性好多7 C9 \9 O8 h- n
就好似隻game 由12粒珠 加到13粒珠咁3 @/ _# R7 r( Q' X' j0 g
當''堂''好玩哂
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& D" ]1 z$ g( f; A! Hp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:3 r4 }0 M! t# }/ h9 y

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5 q8 G; o+ f  K+ A5 H+ hp.s. 求''堂''字正寫...

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已是正寫吧