sakura310

Filename: DSC01158.JPG
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$ x% s) s/ @6 J2 Y: e) J2 i. X" X2008-01-18 00:25:24 | 阿感 | 2+ i- m+ a4 U8 L3 l
2008-01-18 00:24:20 | playbr2 | 20 z' a& g6 a5 n9 u* u
2008-01-18 00:22:02 | 但丁 | 2' Z" O/ h, r8 v* k6 j) L/ h/ @

$ M, v7 s2 ~  T# k& S3 l2 i點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:7 P5 o) j& ?7 ^
Filename: DSC01158.JPG
! {9 r) Y( Q8 A. }Datetime | Downloaded by | Counts( t+ Y  ]/ Y( E1 F! k) e6 W
2008-01-18 00:25:24 | 阿感 | 2  P9 v3 S. ?- d1 Z
2008-01-18 00:24:20 | playbr2 | 2
# s3 Y9 @0 ~8 ]) b$ F9 o2008-01-18 00:22:02 | 但丁 | 2. ?7 _$ w  ^% D& F( T+ z4 b1 U

6 a( A2 g' v- Q3 l* u點解大家都down兩次? XD

2 T0 P% N( a) W8 ~: d& |2 A

/ M7 U4 `( E5 b1 [5 M  N我第一次開睇左2秒就close 左
8 I; G8 Q7 t) i5 t( c7 @之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
. v+ ?6 d8 w7 |- i+ Z. L: LFilename: DSC01158.JPG  O* ~' D& }, a: L
Datetime | Downloaded by | Counts  r$ i  E9 ^: d
2008-01-18 00:25:24 | 阿感 | 2
7 m5 I: G0 L% |# W( p2008-01-18 00:24:20 | playbr2 | 26 x5 b2 x2 B* o: I# N* p3 r' X& d
2008-01-18 00:22:02 | 但丁 | 2
8 D5 ^, E4 U- X
  f# O2 `8 j6 @$ I點解大家都down兩次? XD

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) ~" H8 c& R# h! y快d捉我錯處+ q( k! j. B1 Z# Q4 A; K! ]
話吾定我都打錯 + - 符號3 `- a# j$ r; y9 k' ~
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
( W; D- g6 U( \0 d) k* S1 c0 b不過,c=101n哥度(解除n係正整數的限制,只是整數)
! m/ x' L9 T2 p4 t/ Y! x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~)
" A/ K+ n+ U* b) d; X- W# {知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
; ]( e) v' u$ q, g7 z但原先是不知答案,所以唔知有無失根
% _8 W% H4 l8 w: j2 ]2 K2 w+ J# D) }# F, [3 t, A* q5 g: w
有時見到題目都感到有點不爽0 k4 k8 U' e( e/ 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
- F& w$ Q0 F- e( A6 _. 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....; _* e; Q$ C* v) g6 @! @3 B
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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:
2 {2 G$ O" ~$ u9 A) [- U冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree # h, \. ~* h' f

' G6 W! R% F, i& J( a7 Q2 equations 2 unknows
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6 \  C& z% V2 v4 e+ @if 3 unknows there should be 3 equations 8 W1 j7 u, y9 d. A' `% ^
$ y9 B9 L5 b, h8 G$ F  @) O3 _2 b
make it simple
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say
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8 M5 @% f0 M# p; ]# G3 Ha + b +c = 3
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a+b = 2+ \: J  u$ T2 {5 {  A9 h

' a' s. v# m: Y7 }then c is 1
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* W/ h& H4 c0 Y9 W' j4 Ka = 2 - b 9 @* Z9 \$ S2 P4 {/ i
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
4 G& \4 Y3 X4 S! c9 `5 o冇答案ga..... g! ]& V* I( c, b( E$ B- o* z

0 F- y! \0 K& {2條equation solve 唔到3個unknown ga....

  O/ N+ P, _# \! q* d9 a% L% ~- x* @9 t1 q5 r8 N  ]$ }8 ^
此言差矣~
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1 h2 W1 w1 I0 z0 w1 F, E( `2條equation solve 唔到3個unknown ga
5 L7 Y7 o. F7 c1 _1 h2 S; p還欠一個條件,就是3條equation都是linear independent(線性無關)的' t, E( d. L, F" U% K# G4 X0 D

9 g7 K( w: q9 `) `5 z% v; ~簡單點說,多元一次方程就是線性方程的一個例子$ S4 Y  }4 @/ h# Z& N2 R' 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
5 @. G1 w7 f7 c; p1 `; z# s2 {2 O6 I* J) U
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~)
7 T! J5 o  u! o4 d0 x" S例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解- r( ^4 Q1 c' u) K
有興趣就解解看. ^: v  x6 U' C3 c  L
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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$ v- M% t" y* O* p不懂的話就問playplay,佢會知答案

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8 g2 p1 j$ k# ?

playbr2

Originally posted by sakura310 at  06:47 AM:
* |3 F9 T+ Y4 g0 x捉錯處就唔敢當
* ?' ^# T( t- C( m不過,c=101n哥度(解...

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: b8 Y% M7 [& h+ j2 E3 A; Q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# [  C3 _8 z  q; c# y
反而適當地調節一下 , 咁會理性好多8 ?+ C: L+ A" M
就好似隻game 由12粒珠 加到13粒珠咁6 C: ]8 a& x: N8 ?7 S5 Y" n+ ]
當''堂''好玩哂+ ?8 Q2 k/ v4 T  P
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:- K2 W. E: E0 u
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( Q% ~* t9 w/ t% ?; c. hp.s. 求''堂''字正寫...

4 d- K& p5 |) a: C) C% d# ^$ R
已是正寫吧