sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
: k* f& h# a0 |$ F$ \2008-01-18 00:24:20 | playbr2 | 2
, y0 U5 I+ F0 c6 y2008-01-18 00:22:02 | 但丁 | 2
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$ J/ z1 M; o' [& X點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
2 ~, n4 y, V* q/ J) d% m/ ]Filename: DSC01158.JPG
0 |$ v5 e2 m$ r" q$ H1 ?1 jDatetime | Downloaded by | Counts/ U- R! D9 F3 }( Q" W% W4 u& W
2008-01-18 00:25:24 | 阿感 | 2
2 Q0 i5 Y: _' V# a2008-01-18 00:24:20 | playbr2 | 2! p% i& {; y' @3 ]1 n
2008-01-18 00:22:02 | 但丁 | 2
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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
" R* ]! t- Q" a7 z0 \3 [之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  T: e+ D; A0 x% b3 X' j2 p
Filename: DSC01158.JPG5 A- _  p4 x3 g5 `1 Y
Datetime | Downloaded by | Counts% M0 W" {3 l3 l; V$ X
2008-01-18 00:25:24 | 阿感 | 2: Y3 ]2 a  [: }3 Q0 Y
2008-01-18 00:24:20 | playbr2 | 2! z% ]0 q; ?; z
2008-01-18 00:22:02 | 但丁 | 2
6 K9 P) d: |0 a# R- F% ~/ L, Y
# v% g% y+ Q+ b6 a, @點解大家都down兩次? XD

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快d捉我錯處
. z. j! X2 p& Q+ ?0 ?" V: I7 X0 }話吾定我都打錯 + - 符號
+ w8 i2 w" }6 G# [6 l, Q係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
( R- U" Y1 q' c" d! d( A5 x不過,c=101n哥度(解除n係正整數的限制,只是整數)
/ D0 T% l( P2 v3 I/ x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~)' c9 K0 l. T) n. J5 \. S5 J
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
9 |& Q& [7 }  E0 a  z/ C但原先是不知答案,所以唔知有無失根9 }! t( v8 k1 n4 L0 b+ ]
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有時見到題目都感到有點不爽
7 d. q+ f$ I) d6 T* L9 W5 f8 M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
" g$ j$ y  o, B# r, y$ _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....6 J7 U% q! Z( \, X( J& B4 g
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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:+ v4 x  B( T9 I+ O
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows0 x3 I( ]' c+ B' h2 X! |
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if 3 unknows there should be 3 equations
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make it simple
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0 v* K2 W: l, `say 0 d1 N9 S: Z1 p1 N- P# z. W

, c! d, |3 h, S+ ja + b +c = 3, v4 M5 E8 B0 L. a1 B1 f
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a+b = 2
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8 Q  b" Q2 d1 X1 R6 l  ]then c is 1 ' y4 o, ~7 h  ~+ |0 i

4 x, U& i3 C4 s" @; fa = 2 - b
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# a1 o6 a( g8 t" C9 ?* ^so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:. c  W; e9 p4 k3 `; T' t  c
冇答案ga....
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1 ]4 e% `# i/ u1 {2條equation solve 唔到3個unknown ga....

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0 B  f: ~" P, a( s# w此言差矣~; U, Q2 m! ?$ M
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2條equation solve 唔到3個unknown ga
5 z& I: d7 u  J1 k6 ?還欠一個條件,就是3條equation都是linear independent(線性無關)的
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( [# G, I( G; @" ~1 r9 @簡單點說,多元一次方程就是線性方程的一個例子
6 E1 ^- M& ]$ ?4 Z2 {, E8 k, b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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! G3 g+ {$ V6 ]; C# c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~)
  y, _6 Z+ t% z" l* a+ l$ C; ?例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
8 J8 c  `+ J) r, f4 ?有興趣就解解看
* c/ h- K: z# f不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:+ R( X7 e/ f$ d8 s9 g; Y/ U3 K" j

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' H9 n( R% c. g: S# }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:
6 ^, s5 y* R( l3 d捉錯處就唔敢當
) |- f/ E# Q6 O不過,c=101n哥度(解...

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$ D6 R1 B6 X. ]7 z0 n/ T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
4 M+ y. l+ j2 {* _$ g* F, s反而適當地調節一下 , 咁會理性好多0 l" N) [9 L  A  M' l: q
就好似隻game 由12粒珠 加到13粒珠咁8 h! b( V9 M: H
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:
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! d2 d6 k$ [0 \9 w, \) up.s. 求''堂''字正寫...

2 A8 \  p3 t+ J+ h. j已是正寫吧