sakura310

Filename: DSC01158.JPG  G  k  E% H3 \1 `
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8 R: o+ a& T2 g- o2008-01-18 00:25:24 | 阿感 | 2, h8 p! T' R6 l& _  [6 [# Z
2008-01-18 00:24:20 | playbr2 | 2
' R( i  A' V# j- r7 Z5 ^! ?2008-01-18 00:22:02 | 但丁 | 2
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: t3 x( E: @/ T點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
5 ^# ?: ~* }9 E2 W- Y+ sFilename: DSC01158.JPG1 e( x/ l1 r2 Q6 ?
Datetime | Downloaded by | Counts  I! O* ~3 \8 C2 ^4 j1 i
2008-01-18 00:25:24 | 阿感 | 2
7 T5 ?3 @6 ^0 p, \1 f3 |2008-01-18 00:24:20 | playbr2 | 2
" [1 u$ U! a  a6 W. R, n- L1 W( U2008-01-18 00:22:02 | 但丁 | 2
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) o7 N4 S( j+ W: s9 E' h( `點解大家都down兩次? XD

7 C2 u' O- D9 e; z% A
/ D$ |, W& ?6 E- U我第一次開睇左2秒就close 左) N6 {- N! k- C/ |/ B: V
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:! ?& D! b  w9 [$ G' ~$ W
Filename: DSC01158.JPG: W; Q4 F. R6 ^5 n- M3 V
Datetime | Downloaded by | Counts* p9 k: [2 x" R4 h
2008-01-18 00:25:24 | 阿感 | 2  D( D2 e2 d& q* H2 V* p
2008-01-18 00:24:20 | playbr2 | 2" J8 S' x! t1 @1 Y( [
2008-01-18 00:22:02 | 但丁 | 2" F" U* j# s3 W5 R4 }: Q1 f
) A+ T% |) B# x6 s# ~0 J# O: Q
點解大家都down兩次? XD

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! N& r1 [# ?4 X6 {/ ~快d捉我錯處/ q2 |7 ?/ A# m6 F& E4 n
話吾定我都打錯 + - 符號8 M8 H* j7 G; ?) g
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當2 J4 Q* N+ j( j$ ~' X
不過,c=101n哥度(解除n係正整數的限制,只是整數)  n( l$ _" T0 ^+ f
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~)
. M  C7 @/ k) I* f6 _; e( c, ?知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
/ K- U- f$ D" U4 j, ]但原先是不知答案,所以唔知有無失根. e% A- J; V' d: f9 \* g$ H" `
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有時見到題目都感到有點不爽( n6 ?8 p- @. N& ~0 I, E: i
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& d/ d3 a  [% S9 z7 H8 H3 r
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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) }% ^; G( h. ]1 H2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:6 b; `( J2 Y9 Y
冇答案ga....( G" x; @, a+ u. J
7 b4 G& _4 m3 N5 P$ A+ ]3 M
2條equation solve 唔到3個unknown ga....

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2 W# S3 I4 v2 b! @3 ?agree & U$ ~+ q8 q; O" ?1 |# {' e
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2 equations 2 unknows
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1 C* \% C* t- T9 N" wif 3 unknows there should be 3 equations : O0 c9 c/ |5 C# S

4 x3 n5 \( ~. ?  _make it simple $ n9 Y: u5 e4 E1 [" e6 C

: v3 n4 {0 m: V; B% ysay 1 J0 O2 G- P4 d$ p  d) y
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a + b +c = 3
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  q2 j/ D. w% p5 Wa+b = 2! \9 N! X! p0 x, [5 R

% D, f0 l7 M) P/ s" j) F+ s; _then c is 1
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a = 2 - b
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so 0 = 0 6 _1 T' G# g- b, E* O% ]7 F' @
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
9 {' |0 ^' q" b2 C- O# i1 L. L/ K% [冇答案ga....) }0 x% F- F+ V5 y; ?! k
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2條equation solve 唔到3個unknown ga....

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1 L5 Y# m3 q+ `- m此言差矣~5 K- [  j  @9 O9 b& x8 K! Q( ?4 S
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2條equation solve 唔到3個unknown ga
- w6 M( W, e3 \" I還欠一個條件,就是3條equation都是linear independent(線性無關)的, r7 R: d3 P( x# V# _. T( i' k. K
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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
7 \: g! }( u. l/ w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+ x" V) D0 q1 V+ R8 ^
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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~)
! y4 {1 s" i: h例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# B" M. f  n1 J6 F有興趣就解解看
9 i6 j) P9 ~% Q$ w, B! J; P不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:6 B  t$ \. H4 G. M8 y) Y8 F
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" Z8 g7 s! `0 M$ ]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 a) I( u+ B- O
捉錯處就唔敢當, S' Z% ?4 t7 B* J6 _% K5 g
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7 y* g1 S: K6 D) Q
反而適當地調節一下 , 咁會理性好多& [9 K& _( u# K1 Z9 K8 _/ M
就好似隻game 由12粒珠 加到13粒珠咁
: t2 P/ W0 I: H- o/ w# G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 14:57:6 k* ^1 ~  W% X! ~

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p.s. 求''堂''字正寫...

5 h2 e6 s* @# O已是正寫吧