sakura310

Filename: DSC01158.JPG" }4 |: n. t$ K+ M% ]3 ]) Y# z' `+ ~
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" C% Q# j+ [, o8 o. j& t2008-01-18 00:25:24 | 阿感 | 2
6 G! V/ E! m: ]; h' X) i2008-01-18 00:24:20 | playbr2 | 27 M  F2 ?1 A  |: ?: Q
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:
# E: ?0 N$ v& kFilename: DSC01158.JPG
$ f$ u5 I! l+ K* ]# M& z5 G2 {Datetime | Downloaded by | Counts9 t1 n' s1 v- z# z# |3 r
2008-01-18 00:25:24 | 阿感 | 2
9 h3 n3 _. o* Z, s. |# f& ?1 A2008-01-18 00:24:20 | playbr2 | 29 [  o5 x9 e% o, G
2008-01-18 00:22:02 | 但丁 | 2# k  T' h8 _1 z

" ~8 H9 A4 Q0 v2 K" n點解大家都down兩次? XD

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) F2 P8 ~1 ?* u0 R我第一次開睇左2秒就close 左1 E" `+ `1 _/ k1 h, U
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:/ \$ Q7 m. |8 T% X' _* P' Q) I8 T
Filename: DSC01158.JPG' b- e1 y! A. {2 z7 Z8 n' s5 \' s
Datetime | Downloaded by | Counts- O. w$ _# C, B1 y( G
2008-01-18 00:25:24 | 阿感 | 2* u' g% C3 R/ x
2008-01-18 00:24:20 | playbr2 | 2
& }8 O# N  }4 A; t2008-01-18 00:22:02 | 但丁 | 2/ |+ A8 L$ L5 T2 _3 ?5 Q

/ D5 j& v, X3 z" K+ m( e( }  q' T1 C- g點解大家都down兩次? XD

4 F2 }4 t# @7 ?- Z6 V9 ^, o& B
9 A2 g1 o( x4 X# o快d捉我錯處
- B, O0 z5 G& U話吾定我都打錯 + - 符號8 X$ j3 i. `  m! |$ w; I
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 z: z4 P& X" `& ?  o0 }- M不過,c=101n哥度(解除n係正整數的限制,只是整數)' `; o1 X2 {7 ]! Q8 t
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~)
% M4 C8 U1 l/ Y3 X知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
' R4 x# g5 u/ W) B' C' w但原先是不知答案,所以唔知有無失根, x7 W2 w. s- m+ u% u
" L7 N7 T1 N8 N0 C# n& k
有時見到題目都感到有點不爽
, L! Z" {" ^% b' L2 u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
5 u3 ?/ p0 G; L) c; A- 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....+ }0 k9 s) N4 a5 x
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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:
1 Z: q/ e+ a* T! D0 \: H( C冇答案ga....
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7 F2 _; s; E  V+ j( @5 i8 R  L2條equation solve 唔到3個unknown ga....

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9 k3 k7 {# l/ h7 I+ s1 iagree 1 g/ q1 F# f* o

% D' u- u5 {  l. F& e, ^2 equations 2 unknows8 B! `; S6 E  p/ z
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if 3 unknows there should be 3 equations
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: X; \' X5 y$ \- x" \" I' l" Omake it simple . f6 w  F9 M! Y( H: i7 }
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say
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a + b +c = 31 l- y- y" h0 C9 z  i/ S
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a+b = 2
0 A# m$ R; m2 f$ l! [1 `: S) s0 E9 c, E, d3 _5 t
then c is 1 - u0 }' i# N0 r2 G5 W2 C" f

* z8 I# `* z( r1 n+ n6 `2 f$ y! w. Ia = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:: A  j% _. I, w
冇答案ga....( k% k: x6 T" d4 D! ~- C

+ z# R  m  _# c2條equation solve 唔到3個unknown ga....

2 e) a0 o3 Z$ u3 d

  C* H* a- u/ U9 o- ?" x; K此言差矣~' e  O) @( H; D% o8 V6 q
% c$ X7 R: _7 T% ?& @8 T* I* g
2條equation solve 唔到3個unknown ga
0 M1 b) r$ \: n9 G& w6 o( G2 i還欠一個條件,就是3條equation都是linear independent(線性無關)的
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* B+ N, l( g+ D( K- S簡單點說,多元一次方程就是線性方程的一個例子
% |) D0 A1 P1 H; N2 @' E% n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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, s6 `$ D: \, {6 y1 T+ Y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~)
3 D- }2 g: G6 x例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解) @  m' w" z4 E1 J% r$ o+ P
有興趣就解解看/ x0 S3 @0 M  E& k7 a1 [
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:4 V' r' i- x/ i2 Q% o) P) q2 d  {
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不懂的話就問playplay,佢會知答案

8 e) T, c9 R( @' @# c, R& B2 g1 `* r  \( \

playbr2

Originally posted by sakura310 at  06:47 AM:$ C( e$ O! D3 E9 p
捉錯處就唔敢當; n5 |4 }, \6 {2 v) s' Q
不過,c=101n哥度(解...

9 c* v" d, D" [3 t# w+ M
8 f( t: B* R+ @1 g- P" R) b3 {' N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  N. M3 s' c) A+ ~4 i' Z+ y
反而適當地調節一下 , 咁會理性好多
1 B: t* n/ `* a/ S4 r就好似隻game 由12粒珠 加到13粒珠咁
. }' t; ^9 L+ Q* o當''堂''好玩哂2 O$ Y. ?4 W, h5 D
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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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. |% k8 P' U5 t7 Sp.s. 求''堂''字正寫...

, p9 }3 H: g& Y! a  N! Z: ?已是正寫吧