sakura310

Filename: DSC01158.JPG1 n( U) J: g! ]* f% h8 O
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2008-01-18 00:25:24 | 阿感 | 2% |$ j) S+ v8 E6 {0 J) c5 g) U1 q5 X
2008-01-18 00:24:20 | playbr2 | 2
0 j/ ^9 c- L5 @& F& ~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:
5 k8 _! Y6 a$ A& kFilename: DSC01158.JPG# g( i1 e' g* U# G5 t. e
Datetime | Downloaded by | Counts; ~* g) B- ^" }; p  F4 i
2008-01-18 00:25:24 | 阿感 | 2; r) P9 X1 R! u# h, E- w
2008-01-18 00:24:20 | playbr2 | 2' j; x/ U: D% a3 c- T/ M) c
2008-01-18 00:22:02 | 但丁 | 2
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' z; p5 d* U; C! W: Y  N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( z, j* t. x% `
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
% N# K' G! ]) c6 I1 CFilename: DSC01158.JPG
0 _' ~8 D' y- XDatetime | Downloaded by | Counts
" M, N  ], C& b* ^# g2008-01-18 00:25:24 | 阿感 | 2
+ E, A5 Y) g2 l' O2008-01-18 00:24:20 | playbr2 | 2
8 j, d( Y8 N* `6 {  p8 L7 f. y2008-01-18 00:22:02 | 但丁 | 2
$ n- l* `. d* K- n1 n% K2 s/ E5 j% b, j2 H7 _2 V" ?
點解大家都down兩次? XD

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快d捉我錯處
2 p/ A/ X/ _9 P0 |話吾定我都打錯 + - 符號
1 i' ?) ?& k& c& e係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當1 N5 f0 E4 H/ I. y0 D" q
不過,c=101n哥度(解除n係正整數的限制,只是整數)
2 V( B; v6 W, |$ ?) j" t% C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~)! R: K  D" U, Z0 i5 l- x
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
3 Q- o! u+ {# d- y1 \但原先是不知答案,所以唔知有無失根+ E; W7 {1 n# h1 J, q4 m8 @

4 U, A2 j- ~' Y6 N0 J" l, z有時見到題目都感到有點不爽8 V; \1 H0 Q1 u: T* R) h% ]
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* ]- T6 h; L! x$ K0 @- D) s
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....' Y& G! \% z; x: n

  o2 Q6 q/ r- A6 y; D& r6 k! F2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
& J' m4 n7 N$ d5 R% [9 ~冇答案ga....9 Z6 y" t) O  q

/ R& l7 K4 E& P- G$ u) N2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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( R, C& p; I3 v$ Cif 3 unknows there should be 3 equations . |- E; ~0 ]5 K% M& V
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make it simple 3 L! {/ E+ O& z5 W
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say 4 m2 C# l: m$ f; _* s: g% Q' t
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a + b +c = 3- C4 g( I5 a: T
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a+b = 2  l- P/ k0 x3 ]/ P
0 ~, Q6 T0 j+ F0 y" ^
then c is 1 ) H/ k; O( b$ L
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a = 2 - b " v1 k7 T% \+ ]3 t' c* F
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so 0 = 0
+ c. _; c" i" L& A8 g$ s9 Q) o. N/ \6 @$ x+ p" F/ ?

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) L/ ?- r* O2 G; Y# E' v
冇答案ga....
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5 J* A. K+ K, x3 H* J, L2條equation solve 唔到3個unknown ga....

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* ?7 C3 r* [) k5 q( [9 O此言差矣~" n: V8 h; _. `0 P0 C/ K
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2條equation solve 唔到3個unknown ga* s$ Q+ \7 \+ G+ b" D; x
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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* r# \2 Z# M: T9 W+ p簡單點說,多元一次方程就是線性方程的一個例子
; X, v3 N& Y! [5 x! @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0 S- K, U  c2 z1 C

6 P1 p4 [/ v9 B: ]+ U& T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% l3 D2 a6 l, h
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解5 `1 g$ p% k: r* [0 S% f2 u
有興趣就解解看7 g3 g) q; j' j; X$ c" r  s# ]
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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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:5 ]: A3 Q2 r, J9 O
捉錯處就唔敢當
3 R: |, `$ n1 a# |) g不過,c=101n哥度(解...

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6 T7 h6 d% P: J0 o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 G! z4 a& V4 p3 S# F反而適當地調節一下 , 咁會理性好多1 u, H6 o5 Y, D) @
就好似隻game 由12粒珠 加到13粒珠咁
# F3 I% Q& V- e* _) N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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6 U- h+ H3 p) U: D1 ]) ap.s. 求''堂''字正寫...

' p7 C& P; h( }# z) z5 o. r已是正寫吧