sakura310

Filename: DSC01158.JPG$ `0 p1 c$ L+ M
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  {6 W0 q5 k: z" g+ _2008-01-18 00:25:24 | 阿感 | 2( Y% ]/ h5 t7 G  q
2008-01-18 00:24:20 | playbr2 | 2
) X  ]5 [1 Q, |8 G. Y2008-01-18 00:22:02 | 但丁 | 28 o+ k( A8 I( Z

; M" L7 M7 L6 K7 ~$ ~點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:1 x5 `5 N$ D6 T. ?9 ^1 @6 j
Filename: DSC01158.JPG
% g1 T3 |, d# ^7 S+ j, XDatetime | Downloaded by | Counts
" J# o1 h& m4 h* W- |2008-01-18 00:25:24 | 阿感 | 25 b7 C$ a( S$ ]: E, J7 q8 s8 \& K
2008-01-18 00:24:20 | playbr2 | 28 G8 `0 M& g' N1 e* X2 q8 u# J
2008-01-18 00:22:02 | 但丁 | 22 _! z" C( e+ g& B* y( R5 N0 l

/ Y" I2 K1 t' w& {$ X8 H, q7 F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+ l2 ~; B3 n" U: B: B8 Z% J
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:6 P/ _$ @* N0 r* X
Filename: DSC01158.JPG
, U, M, N) N7 s: ?" jDatetime | Downloaded by | Counts; |8 b* O5 b; s4 }
2008-01-18 00:25:24 | 阿感 | 28 e6 C, D! _7 A, v7 `
2008-01-18 00:24:20 | playbr2 | 2$ {" ?. M7 ^+ ]' e# e
2008-01-18 00:22:02 | 但丁 | 2
5 w8 j$ ?5 C; x" o2 o- L
/ W4 ^. n# L5 Y" j0 \( {# G點解大家都down兩次? XD

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4 C9 A& `) y1 h快d捉我錯處
% E! ?& J1 V) x' `6 v  p9 o2 _話吾定我都打錯 + - 符號
: B2 j9 M# g0 r- F係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當. s* ~5 X; x, e9 O9 |
不過,c=101n哥度(解除n係正整數的限制,只是整數)$ C/ i' W& n7 v) ?7 N2 C2 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~)4 g1 p: {/ ~, h: n# o- N. o% P
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
1 P+ l6 s% k( b/ y' W  l但原先是不知答案,所以唔知有無失根
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  c: K  u5 J+ d: E+ _' o有時見到題目都感到有點不爽: c  c; D5 K# y; `
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/ [$ I! t9 s: E
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....+ g! S. }; b' @% Q% i; ~8 z
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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:
+ s. @. v% K& m: K7 q冇答案ga....+ ^6 a/ D# s% X! I6 c- y: O

9 v" I) F" e% X! I8 {2條equation solve 唔到3個unknown ga....

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1 W% U) Z: N2 R: U2 equations 2 unknows) W( ~) T4 \3 o, X4 J" t  M$ S# e
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if 3 unknows there should be 3 equations
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make it simple
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1 x/ D$ |8 V$ A+ E* F7 k" u0 g. N+ ca + b +c = 3
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# s, O5 f# b( G# Aa+b = 2
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then c is 1
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:- `" o8 N: w  P' W( A; ^% G
冇答案ga....
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- T' b* M7 J' w2條equation solve 唔到3個unknown ga....

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5 ~+ d2 W# n  M$ Z此言差矣~
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* R' Z; c. A4 t8 \# b8 ~: d2條equation solve 唔到3個unknown ga1 ^, J/ l( c6 v' S' n' O
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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
: a( G* H) N5 |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# i" H& D' D9 d* h( i, g- T' L4 ?
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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~)1 ^( S$ f8 [+ z' [* u
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解7 I8 ~, {5 i0 G  X/ w4 P6 v! s2 W
有興趣就解解看3 Y) l  F8 o5 `6 g1 i
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:' t, ]- Y  y* `+ T9 a9 G- |1 a
捉錯處就唔敢當! U' g5 z% E" z( j& z5 w7 S
不過,c=101n哥度(解...

+ n* j$ b& Q8 r$ O/ o6 C( d# \
8 X4 i$ Q/ d5 X( S3 r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$ C- Y7 ?# |" s3 z0 F4 v
反而適當地調節一下 , 咁會理性好多8 P/ k2 E2 X9 c
就好似隻game 由12粒珠 加到13粒珠咁8 ~2 {7 L1 i* v+ I
當''堂''好玩哂% A! {  ?; J1 C

0 J1 Z$ L- Y5 f# C6 |p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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/ I4 X3 @: l" f( `& u% ^/ Yp.s. 求''堂''字正寫...

. q4 f+ W' m6 A7 n已是正寫吧