sakura310

Filename: DSC01158.JPG# D! w7 a' H6 A3 M# k
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2008-01-18 00:25:24 | 阿感 | 2  H, A( u' V( J! ?
2008-01-18 00:24:20 | playbr2 | 2
- d- o3 d& a( m3 T5 ^2008-01-18 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:" s" Y8 u4 i6 _
Filename: DSC01158.JPG
  O2 r2 J- D) m3 ]) c- oDatetime | Downloaded by | Counts  P* B5 T0 T6 r8 ~) D1 ~, e
2008-01-18 00:25:24 | 阿感 | 2
: l% K3 A5 B3 T9 C6 @) ^! |4 E2008-01-18 00:24:20 | playbr2 | 2
- E; k- i/ m; v( G1 X. a* A" ?$ R% |2008-01-18 00:22:02 | 但丁 | 2
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5 n( b: O# s8 ]* F& K5 S; Z( o點解大家都down兩次? XD

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+ F2 \2 R' I8 q( _' l我第一次開睇左2秒就close 左
9 x+ D6 @- k# [1 d% r) q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
  c0 H5 F1 V' I% {Filename: DSC01158.JPG1 q  B  K; ?4 A2 P
Datetime | Downloaded by | Counts$ U  r# d) u3 c+ K
2008-01-18 00:25:24 | 阿感 | 2
2 {+ T% E9 `6 j% b7 q2008-01-18 00:24:20 | playbr2 | 2- s: a6 P  o9 e( |3 A* J0 }
2008-01-18 00:22:02 | 但丁 | 2% Z% `0 @6 d" R- |9 O" ?

9 L1 H/ X- o' J' m& b點解大家都down兩次? XD

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( Y% G& e4 m. V) |5 V3 c快d捉我錯處
1 N# C% z! w+ l話吾定我都打錯 + - 符號
: m$ w& d( N- h3 S係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當$ D  [  \/ Z. T2 @
不過,c=101n哥度(解除n係正整數的限制,只是整數)6 Y( w' E; z& P2 K3 a' S3 A
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~). h0 ]# a7 e/ P& w8 Z
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
6 O* j, L5 D* E但原先是不知答案,所以唔知有無失根) \# f% o! q6 u9 p$ Z7 ]
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有時見到題目都感到有點不爽7 Q  C  D$ E1 [* _4 g
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
, y2 P1 K7 p: I% H$ B' 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....
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& _) h" k, M# ^2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
" d' |& @9 B# W9 c, E# ~冇答案ga....
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2條equation solve 唔到3個unknown ga....

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& m' f/ ?$ i) F$ W5 k& A8 V% _agree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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make it simple
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say & u% n) N. k1 c  p4 }* s: w* C
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a + b +c = 3
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a+b = 2$ Y7 i* h: P5 x- R6 T) p0 X+ I

% M6 V9 l5 k6 B) D7 Vthen c is 1
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* C  R6 K+ q# ^: P! }  xa = 2 - b
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4 X; r, A" C% F3 v7 rso 0 = 0 & i% Z3 _$ o9 E, }5 w" H; b- M

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
) [! J2 X4 c% o: v* d/ ~冇答案ga....) P, S0 a) q- G! I+ L6 `; J1 N
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2條equation solve 唔到3個unknown ga....

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( Y8 n8 K: _' W4 e  T此言差矣~
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! I: R- [# o* R/ R- l) d2條equation solve 唔到3個unknown ga5 p. f, n1 n6 y+ Y: t8 {8 n
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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( H3 V7 x/ N" u: m1 [6 `( y7 }簡單點說,多元一次方程就是線性方程的一個例子  M$ K/ w7 I" H  ]
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& r! J4 Q0 a4 x; @3 G% }1 [

+ R* W* e/ _$ I# s/ p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 p) o1 q, k3 I% g8 ~
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
  j" H* g) l  k6 L' D' R4 `* d有興趣就解解看
: C- m4 d2 s: D不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:3 |, P: E9 l9 a9 \' ?/ V6 s
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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:2 n6 m8 A- m- @* N5 r
捉錯處就唔敢當
0 e" F9 ?0 z# T9 V. I不過,c=101n哥度(解...

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% ~- ?" _' |- l- K- d: p& b- l% P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
! L. A# E+ }# x  R! d0 z+ z反而適當地調節一下 , 咁會理性好多$ K: V) b3 I" T; I% C/ e
就好似隻game 由12粒珠 加到13粒珠咁/ O9 y" U% a. `. }
當''堂''好玩哂
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:* I  V0 I* l" k; ?

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$ Q  V0 Y. t& yp.s. 求''堂''字正寫...

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已是正寫吧