sakura310

Filename: DSC01158.JPG+ s+ V4 n& j( o% u$ w# x9 a- b+ ?- ]
Datetime | Downloaded by | Counts
" Y7 f5 X% L% O2 U( p% w. @2008-01-18 00:25:24 | 阿感 | 2) f: E: ?0 _* y. t8 ^, M9 O9 z
2008-01-18 00:24:20 | playbr2 | 2$ i4 i) ?& V- U+ z
2008-01-18 00:22:02 | 但丁 | 2
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) P! b' v4 z( B6 {& t( e' p2 i1 F點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:8 `+ ]! [. o  |6 L5 Y* ?+ m
Filename: DSC01158.JPG
) Q2 J7 X3 K0 C2 d: ?Datetime | Downloaded by | Counts
4 V5 c* H% k: G7 r2008-01-18 00:25:24 | 阿感 | 2& d  I. J7 v! ^8 B1 r
2008-01-18 00:24:20 | playbr2 | 2- q8 y' w8 g- O) X0 @/ O% ]$ i+ S
2008-01-18 00:22:02 | 但丁 | 2; M3 |. ?  n- p) o& A
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點解大家都down兩次? XD

; E# f7 |  p5 P& D6 }6 o1 G# f1 {& T; l' o+ T% w% c: O$ \
我第一次開睇左2秒就close 左
1 A3 B4 p# b/ [0 x% P  l之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:3 l% [/ A& G4 x* ]! x0 {6 t1 O5 D! m7 i
Filename: DSC01158.JPG
+ @& T$ X3 E! c! ~  gDatetime | Downloaded by | Counts; j; l: k- E, F1 H1 @
2008-01-18 00:25:24 | 阿感 | 24 M8 Z1 K( u5 V$ y. C# h* Y
2008-01-18 00:24:20 | playbr2 | 2
+ r1 @0 A; P2 U4 ~2008-01-18 00:22:02 | 但丁 | 25 z" W4 H+ P. i. |

1 R+ p2 ^: y% R. ~點解大家都down兩次? XD

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  g3 Q% Q9 ]2 ]; U; \快d捉我錯處
$ c# |: J4 b1 j3 o9 F話吾定我都打錯 + - 符號
8 E& I7 _3 R$ [' x+ e- w9 j係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當  W. F/ k8 E% e* p
不過,c=101n哥度(解除n係正整數的限制,只是整數)5 F3 c/ {3 e. n) S/ S, r
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~)
0 Z9 t* ]* |: u% j知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題% s6 H5 s1 @* S( v6 J: q, s
但原先是不知答案,所以唔知有無失根
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7 C( e( \5 b) D- ^6 S- Y有時見到題目都感到有點不爽$ }. e1 z/ v' x; c& c
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
7 ?& G' ~* [2 t* i) 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....9 n' z- l1 O, a# t1 Y/ h& q

' \. C5 r6 b3 T6 [9 b0 s1 k% J9 ?2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
0 M7 P+ j! E/ [: }0 U9 s冇答案ga....( D, Z$ S" t$ s4 ~

' p# b' _4 D' d" X4 }! C2條equation solve 唔到3個unknown ga....

- f+ S7 A" W4 k

- I( q9 y/ L3 |- Q4 D, R- a5 uagree ; o" V8 b% f0 M% s- K
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2 equations 2 unknows! E" C( k$ d4 q5 t- w
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if 3 unknows there should be 3 equations ( [' d/ m+ D8 \

6 C8 u, f; A5 A* O( l( M. d( Zmake it simple
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- N& n) A; M; m$ jsay * c% C/ Z* ?2 G0 j2 O

* p8 L3 h( R5 C9 L& W1 E8 q0 q9 o! Ga + b +c = 36 [  Y. o4 k  v0 j3 B$ G

6 x' V7 `- J% [a+b = 2" e* n# S5 ]$ `# w
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then c is 1 * b; D" G5 r4 e2 ]" V0 X' \
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a = 2 - b : Z, M' b3 y8 z, d! b
, g6 k8 k9 ^& H: p" t
so 0 = 0 & ]8 C0 A2 A! T6 M
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:6 E* H0 ^5 C1 h* ^0 r2 i
冇答案ga...., j) ]$ L4 o8 h* H. t
" I7 |/ e. f1 K% B
2條equation solve 唔到3個unknown ga....

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此言差矣~- s& y  L' I, L9 f* k( r
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2條equation solve 唔到3個unknown ga
8 m/ f' ^! x& A$ Q還欠一個條件,就是3條equation都是linear independent(線性無關)的( k( Y9 ?) A2 K# g4 J0 q1 q
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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
( o6 x" C5 {, }' K/ A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~)
8 H" Y, K, y! K! p. I例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解& [' O8 M: }0 ^1 v  }$ q
有興趣就解解看
  W7 g, g9 D. B4 [3 X$ N) ~不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# }+ s6 z+ {: F, O( y6 Z

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; }. Q) w2 K$ ^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:8 V' X9 ]4 _* E+ e5 C0 ?
捉錯處就唔敢當6 K4 i, W& e, `  V- m3 Y
不過,c=101n哥度(解...

2 @+ x2 b7 M! T. N, W/ }/ q. }# B* _) D  h/ i! H! T8 u# Q- t: Q3 L
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+ v* C6 [- s8 M6 ^+ m
反而適當地調節一下 , 咁會理性好多' d2 N  q3 {4 |& I7 l1 R% g
就好似隻game 由12粒珠 加到13粒珠咁+ m. w" Z5 q5 J. G
當''堂''好玩哂1 w3 ~' l6 E' z* H% \# I0 y

; F6 J7 n9 l3 g3 Mp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:: ]% a, G. q9 t8 z9 i6 i9 c* |1 N

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% p3 G6 {! o' H9 n2 G- F2 jp.s. 求''堂''字正寫...

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已是正寫吧