sakura310

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2008-01-18 00:25:24 | 阿感 | 26 q' r' k3 l3 @
2008-01-18 00:24:20 | playbr2 | 2* R" f5 J- C+ r2 U  e$ [. S% N
2008-01-18 00:22:02 | 但丁 | 2' @( _8 {# y; W- p+ d

3 L- l9 b4 P7 J點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
8 G' t7 n7 `5 J8 A2 c$ d' a1 JFilename: DSC01158.JPG7 b3 \3 D1 n2 R1 g* s3 w
Datetime | Downloaded by | Counts
! e0 G# p; d' x) l; f$ o/ d2008-01-18 00:25:24 | 阿感 | 2/ |8 S2 [* o+ ?+ f9 m5 C+ X
2008-01-18 00:24:20 | playbr2 | 2
* w2 J. v% k6 U/ X$ w2008-01-18 00:22:02 | 但丁 | 2
2 ~7 U3 E5 `0 V7 R: E# \) O
' H2 U: E) y. {# S  M8 A. k點解大家都down兩次? XD

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# q1 N+ O4 Q( z5 @* {9 U我第一次開睇左2秒就close 左8 b% }- w9 O% q: x8 Z
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:0 A/ E* L) t2 C, h2 p1 p+ z+ U
Filename: DSC01158.JPG# v' b% ?8 K: W# @( D3 C! O
Datetime | Downloaded by | Counts
% M+ A5 t# Y; t3 }2008-01-18 00:25:24 | 阿感 | 23 l' D8 Y  r% A* l0 ?0 z. u. `
2008-01-18 00:24:20 | playbr2 | 2
6 K3 s& s: d  i1 q* }5 V2008-01-18 00:22:02 | 但丁 | 2
' ^# L2 K  Y: B3 S- n
& m# b  ^* e5 _+ t" [4 B點解大家都down兩次? XD

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+ o! X. Y) n, p6 D% O; z/ j快d捉我錯處
7 G& q2 E5 a; F話吾定我都打錯 + - 符號
3 m+ l4 S' X8 k4 K4 Q# x* u係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當, D8 I" }& v. H
不過,c=101n哥度(解除n係正整數的限制,只是整數)
" Y4 B  @7 {/ E4 t1 [6 h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~)2 B7 P' U' L* ^5 R$ Z! J
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
3 n/ l( q* i$ q: {. z但原先是不知答案,所以唔知有無失根
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1 O5 ]1 Q$ F. X1 ^+ T+ b$ }+ }  m4 G有時見到題目都感到有點不爽
& }1 G* u+ H5 q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
- _2 j: x7 S0 X8 m7 l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....8 |- F2 e7 l/ L+ v' E  T

# a( h- T; d; p. C$ b3 y2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:. p( _& |9 V8 n7 O8 s
冇答案ga....* R- `$ ?/ x" F: S4 d
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2條equation solve 唔到3個unknown ga....

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agree ! d# b! J1 ?. R- L" O; e' `0 g4 c
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2 equations 2 unknows) f7 O2 w9 X# h" q5 ^( B4 K

8 @8 q0 g5 q3 f" V# f8 Gif 3 unknows there should be 3 equations
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make it simple - N- k) v$ u/ L2 P1 _8 F

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7 ]7 U5 W  Y7 Z. [% |# F: sa + b +c = 3* j( Z; x% ^# B3 G' J
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a+b = 2
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- C8 C+ a) j2 W( j6 Kthen c is 1
+ j- D; j) n  P
5 ~9 q1 M$ L; Z: e0 a9 ?1 q0 Ya = 2 - b " ^* W3 V& m, B& h2 n! c
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
. b. A1 h. b# H7 n/ q! n+ \. o冇答案ga....; w7 u+ o& |: s3 K* T" Z
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2條equation solve 唔到3個unknown ga....

; p# |2 z; n6 Q4 G7 P7 a# c* z0 `3 P5 l! z" V: a4 N( m- a  ^
此言差矣~
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$ M3 o4 S6 D# V# E; |- `5 Q( ]# {- g2條equation solve 唔到3個unknown ga$ s0 {3 r- R% C
還欠一個條件,就是3條equation都是linear independent(線性無關)的1 F- ]( @# g6 H4 j! ?7 e5 d1 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6 Z$ S/ m3 [% E
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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6 V+ y8 l* z7 ~& H. m# n# x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~)8 W8 n4 p, g4 g" W/ r6 m. @
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解# {( `# `1 b7 Y( F3 }
有興趣就解解看
" c- ]& G) j( H  K) n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:
& l7 [/ J; j& G$ w捉錯處就唔敢當
8 [3 ], o2 W+ K" u3 p0 R# p  ]& R不過,c=101n哥度(解...

  f  A8 y& `% d% @: I

# [4 @/ L  w5 F. d9 v4 M- s, _2 D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* u  D" K& z9 |( A1 V
反而適當地調節一下 , 咁會理性好多
8 F) G: O$ ^$ }) K2 @( S就好似隻game 由12粒珠 加到13粒珠咁
; h) J) j2 _& o& v8 J當''堂''好玩哂, @" q! L) B: b4 M( s: k

, o* u+ C# }. r  Lp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:3 Z, K! V4 H  P# ~3 A/ C* i4 e

7 J/ }4 J, I8 G9 o# ]+ l+ E3 e. l- F3 f" q7 l; q2 Y% k7 ^
p.s. 求''堂''字正寫...

- z) _8 v2 K9 R已是正寫吧