sakura310

Filename: DSC01158.JPG
, ]' r% w9 c. z9 m+ R* o+ QDatetime | Downloaded by | Counts) b9 S! L. }2 D" o
2008-01-18 00:25:24 | 阿感 | 2
6 o0 z2 v- p3 ]0 L# P0 S" ]2008-01-18 00:24:20 | playbr2 | 2& T% ^# u4 l9 w5 ~, J" L$ b7 P
2008-01-18 00:22:02 | 但丁 | 27 w( \2 ^. J8 z/ j% G

: t0 i; `2 Q  ^. [* S8 t點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
* E) d5 s4 n$ L7 }8 RFilename: DSC01158.JPG+ Y* H* `0 a$ n( A1 m5 l9 k
Datetime | Downloaded by | Counts, W0 Y5 m) x5 u, s( t" {- k' c
2008-01-18 00:25:24 | 阿感 | 21 v) Y9 d( P0 N5 W
2008-01-18 00:24:20 | playbr2 | 2
6 u) O) c9 V$ K2008-01-18 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% @3 a( X, j5 O7 w) ^4 |
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:2 t6 p, s& v( @
Filename: DSC01158.JPG
# D3 n& t+ i' K1 C6 H" `9 UDatetime | Downloaded by | Counts
/ p( r2 W; O6 k* H2008-01-18 00:25:24 | 阿感 | 2! E1 o0 \9 t* v, Q7 i
2008-01-18 00:24:20 | playbr2 | 2; S( h! |" k' D
2008-01-18 00:22:02 | 但丁 | 2  x/ T5 P6 r' P- n! g4 G9 q

* M& ?* x2 Z0 f9 C+ Y點解大家都down兩次? XD

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$ W& ]$ e+ L8 _快d捉我錯處
2 H% o0 E# e6 \+ m/ t# f* @話吾定我都打錯 + - 符號' ^+ F) a. T, U7 [# T" |: \
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當( |3 x; M* M: g& q# i
不過,c=101n哥度(解除n係正整數的限制,只是整數)
& R) _& C4 h- Q* F. g& 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~)
7 b9 Q; J/ ?1 B  N& ^知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題( O/ M$ U  `& d% I
但原先是不知答案,所以唔知有無失根
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' {# ?( _) w8 c1 r有時見到題目都感到有點不爽; T5 n' h$ o4 k$ G9 @5 K
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
* N0 W8 i. o0 Z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....- K7 c! k4 c" k8 f, s# o* I

" W7 C+ i; ~5 n, o. E. [2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
: x0 p; r9 D5 P2 D+ W! W1 p/ j冇答案ga....
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( [) k- h: w% B' e# ?2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows" u7 ^( U! w/ H* K9 r& L% u
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if 3 unknows there should be 3 equations 5 V2 z' @. D7 V$ _' f/ |

+ m3 s/ k* c1 p2 S4 G9 t: zmake it simple
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8 ]" p1 j% T* ^( y& o' nsay
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a + b +c = 39 t* _1 m! `. l  Z2 B: A2 P

4 q9 q7 E  B" K0 _6 O# La+b = 2- C9 `# ~' b2 q* N
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then c is 1
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8 Z3 I" ~, W8 s! S- Qa = 2 - b ) V0 d  P" K, F
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so 0 = 0 . L: t& M6 V% W% z
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
" I$ i  {  J# S& s6 D$ A6 G5 x冇答案ga....
5 q+ j" [+ b) ?! g! X+ F) L; L6 _7 j6 O. Y4 h8 Z
2條equation solve 唔到3個unknown ga....

6 s5 ~7 O1 B/ _: A) @% h) r+ d: V/ ~$ @
此言差矣~
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2條equation solve 唔到3個unknown ga
, Y) X0 m" h! ^* d還欠一個條件,就是3條equation都是linear independent(線性無關)的% m! ~) N- i8 Q# s0 i
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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
& X' h9 D$ A' C" `7 |0 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
+ @% h3 Z' K+ }) ?9 t
* O& K1 w. [4 I' u; v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~)
4 w( O4 O7 n. u% @, L6 d例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解3 Z7 R6 [  |- ^2 p' i, E
有興趣就解解看
1 w' f& n  L! N* h/ i不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:: j6 B& v! _$ M
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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:
7 V7 k, W# K0 X+ A2 r  e捉錯處就唔敢當1 |' @$ W; h% D+ E/ p0 Z* |# l8 @
不過,c=101n哥度(解...

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! u3 ]# Q7 c3 X! J5 E: V6 O; g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% g( T  X) s/ x1 ^- k6 T7 t  H, `
反而適當地調節一下 , 咁會理性好多
/ R* ~" V  P' }% w5 t* B; }! o就好似隻game 由12粒珠 加到13粒珠咁7 w8 Y: f3 l, i4 T0 H
當''堂''好玩哂% o' Q3 P" D8 f" X* f5 \
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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...

& ^, u+ X3 x. V+ T. h& H, i! z已是正寫吧