sakura310

Filename: DSC01158.JPG: y8 `& D/ l7 H* f; t
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2008-01-18 00:25:24 | 阿感 | 2
; ]) g5 d& L& u9 ?" ?2008-01-18 00:24:20 | playbr2 | 2" W2 i: P( L/ |+ \  h8 N
2008-01-18 00:22:02 | 但丁 | 2
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, O4 y% r/ t6 _/ @6 J: S, o點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( k) v( L! _" w1 B
Filename: DSC01158.JPG# L- X& w! }5 L' ]- m  C  f
Datetime | Downloaded by | Counts' d/ D+ ^1 O- E9 A2 {* P
2008-01-18 00:25:24 | 阿感 | 2
9 F/ D6 C+ a- i8 S0 l2008-01-18 00:24:20 | playbr2 | 2
6 z- |6 s3 @7 x2008-01-18 00:22:02 | 但丁 | 2
: E# ^. @8 a" |  G1 z* o: n0 n4 j  Y# }4 G$ ]( u
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5 `  ~' B+ @" S% c
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:# X3 m; D9 l! r0 w: A; J) b; R
Filename: DSC01158.JPG1 v5 H( c6 ?9 p7 F3 o: {( N
Datetime | Downloaded by | Counts
0 P# _: _( h" W0 Z" M2008-01-18 00:25:24 | 阿感 | 2
1 \2 K9 K* [) o' h4 w* S& G2008-01-18 00:24:20 | playbr2 | 2  P) H& {# s; ]; Q
2008-01-18 00:22:02 | 但丁 | 2% w7 V2 k8 x" B; n0 i8 K" Y8 \
1 k- t0 @9 m7 T3 v. o
點解大家都down兩次? XD

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* [3 m0 H* E& G8 l" m
快d捉我錯處
% M( I" ~$ c! e  L; _) O話吾定我都打錯 + - 符號: ^7 H: @3 N7 k. r* `- r, C7 H
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當! |! ?3 ?( J8 c, \3 u
不過,c=101n哥度(解除n係正整數的限制,只是整數), O7 Y2 `- {- C, g% X( 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~)( r/ x3 C" r" \% h& r7 }' H; Y
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題* h2 m; m5 ~' h- F: v8 j# B
但原先是不知答案,所以唔知有無失根* F+ d7 Y2 p$ o: _. h
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有時見到題目都感到有點不爽9 E" z6 N2 A9 M) M' m1 R
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6 K, E; ^! {* S4 m0 r( x0 Z! U, ?+ V
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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! v( S0 ^4 f6 F1 [+ j+ T2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:" N( U* t) j% T) G9 S1 a
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows& E: T7 D; t' {2 t: m! D5 E

5 A5 J# k2 l/ {  R1 {5 i1 }if 3 unknows there should be 3 equations & S! B& v7 n% [! \0 R! ^( I

/ t" P2 c( ~- W5 A# x- ~make it simple
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( I' h* ]; E1 v6 Lsay . Y( _. \3 f# y3 F) k9 O  T; j, O

5 I- c5 y2 ~4 O8 ]/ d7 l5 pa + b +c = 3+ H% O3 V" c# s/ `' ~
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a+b = 29 L$ ~" q" z! n5 F. `

4 p- s" w$ F+ b8 |" ~then c is 1 2 E& q8 @$ H  Q- c# U% U
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a = 2 - b . f; {# v9 X+ p

$ l0 Y# I+ p# A9 Z- F( hso 0 = 0 2 _) _7 I% @# D# E) ~

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
! _3 W1 J: c* j7 P  m2 g( P冇答案ga....
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8 R5 z% \4 h$ h0 C4 Q# M2條equation solve 唔到3個unknown ga....

2 x+ N- R% i9 r+ a8 \( M/ }

: B3 [! A4 F% s! q0 X& @此言差矣~
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2條equation solve 唔到3個unknown ga
6 }( [) L0 c/ ~2 U4 a& ~3 p還欠一個條件,就是3條equation都是linear independent(線性無關)的9 ]6 S  J, ?' }

* K  S; ]6 S* G! C" E6 b- E  ]: c& @簡單點說,多元一次方程就是線性方程的一個例子8 [1 G- [7 W9 L7 w0 f# \
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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$ t8 ?5 p) L3 |0 A- }& J( h% ]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~)+ {+ B5 d* ~( q4 j0 r. E; l; A5 F
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解/ _- V- V3 a+ t- |( F$ O6 o
有興趣就解解看
3 ?7 ~7 B3 B( S不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:* Z8 _8 J, M# N8 Z+ X

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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:
/ r( ~" ?% ~$ l$ W% r捉錯處就唔敢當# I, |7 {4 u, V& B
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
  v5 f8 i2 _; {+ ~, J$ `反而適當地調節一下 , 咁會理性好多
' a" S8 I. t: z- r/ i就好似隻game 由12粒珠 加到13粒珠咁
1 s$ C% s2 L8 m, @! ^$ y& {當''堂''好玩哂- s# ~. G0 G* \" {1 B5 c, ]3 o

2 W' p7 m8 V( H% _/ b; Np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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" f2 x, D, j3 B1 wp.s. 求''堂''字正寫...

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已是正寫吧