sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2- D7 {6 Q" d1 D5 |
2008-01-18 00:24:20 | playbr2 | 2+ t5 b/ \5 [8 F7 ]
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:6 Q: }# }3 V, K- s) H6 ^
Filename: DSC01158.JPG
% k7 O& R1 w1 mDatetime | Downloaded by | Counts
8 y3 }; k, A8 L5 l5 x% z# l( E2008-01-18 00:25:24 | 阿感 | 2: a; ?8 }7 F* k8 w
2008-01-18 00:24:20 | playbr2 | 24 ]* I0 b) z9 N0 V1 B
2008-01-18 00:22:02 | 但丁 | 2
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3 w5 g- E1 b% ^% I& S" t) b! e4 Y' \6 g點解大家都down兩次? XD

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: {& t# `# M* g4 p我第一次開睇左2秒就close 左
1 Q- x8 U, g( h4 y/ W6 [之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:8 d) t2 h4 e* ~
Filename: DSC01158.JPG! B" E$ t# j. K* L  h6 f
Datetime | Downloaded by | Counts
" y7 C  ~2 J9 T7 R8 h) D- ~2008-01-18 00:25:24 | 阿感 | 2
5 f/ ?, t8 u* ?! K4 V: u) A9 X  l2008-01-18 00:24:20 | playbr2 | 2
5 Q/ `3 O4 T1 |: Y; A2008-01-18 00:22:02 | 但丁 | 2
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8 h, s: l" H5 D6 \) ~* [: L" Z6 u點解大家都down兩次? XD

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& N; Z) d; w# [1 @6 b快d捉我錯處( C& d( h% B- r' q1 Q* }, H! f
話吾定我都打錯 + - 符號
3 y/ B5 m6 [0 ?9 O% z係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
# T/ Q2 ?' _3 L不過,c=101n哥度(解除n係正整數的限制,只是整數)
6 n% |; q+ }; i6 D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~)% _" u* i& e" u; j0 ]+ F6 P
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
" o1 D$ G1 |& [8 F  N5 C' y5 m2 G6 u但原先是不知答案,所以唔知有無失根8 _- X6 E  l6 T) {  P0 w% |/ o1 D

! F5 F+ O* n# U( i有時見到題目都感到有點不爽, _) `4 S) N+ {# A; s/ _
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$ a8 Y5 T; u$ V6 m
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....3 y! K& h' {& v+ u( f
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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:
3 h" \# K1 P3 K! W& U( l冇答案ga....8 L, w; D2 x  o8 B; O

$ ?- _* b" N% V" W8 S9 r2條equation solve 唔到3個unknown ga....

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0 O6 {2 a  C0 ^& ?# nagree
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' J9 c7 s9 n6 _" {2 equations 2 unknows
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if 3 unknows there should be 3 equations / u. A6 d& p% M; v

" }- I7 M% }4 w& X9 Z8 V  w; [' h+ \make it simple
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! r( P( N2 Y: |say   K0 v% K% {4 K2 Y

( p! |8 c$ Z  v- H* {a + b +c = 3( d- G9 B' }+ i' _/ z: K

1 r5 F5 D3 G: x' ?a+b = 2
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% h7 S: v6 M; f% v! {$ Fthen c is 1 ' [1 N4 q8 l3 c; ?
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a = 2 - b
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6 e6 W% U6 M. p: A  E2 P5 bso 0 = 0 ' l4 D0 h: t) G1 C2 E# L. Y

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
! r8 j# a2 G+ m; L4 \冇答案ga....
2 L+ E* l. N& m
, q2 P' S+ W5 G  @+ y2條equation solve 唔到3個unknown ga....

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) b4 ^4 X; A( [/ n3 ]: J: e+ f此言差矣~0 s+ {1 y/ K- J. ?
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2條equation solve 唔到3個unknown ga, N2 e+ f; V* M, m
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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6 R, ^9 B! K! R) j7 K簡單點說,多元一次方程就是線性方程的一個例子6 v$ l. J# L, t  W: g" L
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~)
6 M: q  j1 v) w例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
1 U0 }" S0 i* S, w. s有興趣就解解看
# k' B: R, I6 |2 Q, P6 d不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# v8 ?  @# }0 Z* u9 u6 C

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( ]% s3 c( x' f2 F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:
- G$ P2 F1 n$ q$ }4 o捉錯處就唔敢當
7 {' ~1 s. c1 P9 Q6 w! V不過,c=101n哥度(解...

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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. b% v0 h$ O* q" q$ v: q0 A2 ~
反而適當地調節一下 , 咁會理性好多
9 |# X# U7 E/ A: v! m# G就好似隻game 由12粒珠 加到13粒珠咁1 U4 d% l3 b: R
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 14:57:3 P9 h. k6 G& z; {- c. V

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/ }# r: ?+ }+ {6 R$ V/ t+ g3 Ap.s. 求''堂''字正寫...

# }; ^% u' b6 D! |- ?0 ]# M. Q已是正寫吧