sakura310

Filename: DSC01158.JPG' @) Q5 F7 u! o
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2008-01-18 00:25:24 | 阿感 | 2
3 k9 W0 }" v9 W; L; }9 b. Q; f4 f% w2008-01-18 00:24:20 | playbr2 | 2
. S* z' u5 M0 i+ u2008-01-18 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:
" l- ^1 Q0 ~7 i* W0 cFilename: DSC01158.JPG
3 j) i7 }8 h0 C. l% EDatetime | Downloaded by | Counts
& }4 [1 |/ G+ N, ~# Z" J2008-01-18 00:25:24 | 阿感 | 2
4 W6 j) N6 G$ X& ?2008-01-18 00:24:20 | playbr2 | 2
# ]& _# v& m( d' `# L2008-01-18 00:22:02 | 但丁 | 21 V7 Z2 B6 t4 Q; x1 z1 ?
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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
$ ]* T" Z+ l) R' F2 v' c) ~之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
. V9 V! }) }" F8 f" n. @Filename: DSC01158.JPG  `# e: ~2 a2 D& B. P6 f: S+ Z
Datetime | Downloaded by | Counts
, ?, N: N: ^+ x& R& N" v2008-01-18 00:25:24 | 阿感 | 2( ~- h! C# U8 R" g) o$ S7 o, S
2008-01-18 00:24:20 | playbr2 | 2
  r7 M8 M9 ~( f! V; B  I+ M2008-01-18 00:22:02 | 但丁 | 28 |% r8 ?% N1 E+ ]- P

( B6 W. F6 u8 G, c2 u+ R點解大家都down兩次? XD

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4 u) i% i3 v3 {0 _, t快d捉我錯處
4 M6 J' O, W) G$ i) ~. @: D& g. W話吾定我都打錯 + - 符號
. K* o% z) E  S1 x4 X係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
, `5 }* f. B$ q不過,c=101n哥度(解除n係正整數的限制,只是整數)2 n" G7 p' j: C: U
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~)* w" e, l; k  O- D
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題. y5 k5 l6 i  I
但原先是不知答案,所以唔知有無失根
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$ \5 v+ M" T( [$ l' v有時見到題目都感到有點不爽" W4 @  K0 b1 E2 C4 Q$ B* ?& f
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
' d7 |; ]. t+ D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....
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  N3 m& W: R8 H0 i0 Y' S2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:, D( x9 |4 ~- C. d; c3 v, T4 D
冇答案ga....& d% @" w: f4 y( z! l
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2條equation solve 唔到3個unknown ga....

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/ y% U6 ?4 C8 I& e) Bagree
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2 equations 2 unknows$ r: Q+ q# B: k
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if 3 unknows there should be 3 equations
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: [2 C$ n  v' {0 l% p9 B! Qmake it simple 2 W6 W3 e  C  s: Q, P9 |5 _
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say - B9 l. [7 |% s9 I' l7 J" l

9 X7 G/ i& _+ K( d% O2 q: f! Ca + b +c = 3
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  u% e% g4 |* P* k* c7 Ea+b = 2, P/ h0 \3 S# P, A3 T
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then c is 1
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a = 2 - b ) I& n+ ~) g, t4 a$ ]' T

* L* o6 K5 x4 E' t2 Kso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
, b0 z" W* j% P4 \3 F冇答案ga....7 u* e/ l. _& P& a% |9 q3 N+ H
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2條equation solve 唔到3個unknown ga....

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此言差矣~5 u( u0 B, r) }% N2 U/ l$ o
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2條equation solve 唔到3個unknown ga# ~  V& E" P4 d2 b
還欠一個條件,就是3條equation都是linear independent(線性無關)的9 n% H( t$ o* T: ^

) h; M, _$ G: C6 O3 D+ @# G$ R簡單點說,多元一次方程就是線性方程的一個例子- ]& Y! s1 ?7 E; t( 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
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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 c: N" M6 t* e8 {7 x" i* K4 b: z
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解* S% H; z4 o  V  k1 z
有興趣就解解看0 ]& f" k3 o2 W3 @$ R
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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; E6 k* L9 v6 a$ |6 k3 ^- _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:. {0 N) `$ L3 D& `% ?$ I
捉錯處就唔敢當
$ Q% ~6 l) D. D  L! z不過,c=101n哥度(解...

4 c+ z! L2 H) B. h9 _( k
( N8 v0 P8 ^. e$ |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" k% K/ {5 V8 R+ j! W4 R$ ^
反而適當地調節一下 , 咁會理性好多( p- G: K; `+ i, k
就好似隻game 由12粒珠 加到13粒珠咁
/ {2 Q- Q5 c" b3 C當''堂''好玩哂
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" p: C0 K4 X; ]# J7 D9 s3 np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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, i! o: W* U* Y6 Z6 ]2 Cp.s. 求''堂''字正寫...

" }; B2 c( d- g8 c已是正寫吧