sakura310

Filename: DSC01158.JPG
  e! E2 p: D; E( p2 o% O# \: nDatetime | Downloaded by | Counts0 {9 H: y2 Z  r% g7 {
2008-01-18 00:25:24 | 阿感 | 2
. G. {' C' z$ x/ I- |2008-01-18 00:24:20 | playbr2 | 2, L, b8 ~3 F' G& A# q/ a& S
2008-01-18 00:22:02 | 但丁 | 2/ {/ S- F! I$ I! g0 z

, |( F4 \8 W+ k6 a" q+ j點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
6 M% g2 O$ \4 eFilename: DSC01158.JPG. s: s- K2 C5 t9 V' r
Datetime | Downloaded by | Counts% h! F, M$ i  e+ A) B
2008-01-18 00:25:24 | 阿感 | 2
; u/ G% q4 D! q# Z" l6 \2008-01-18 00:24:20 | playbr2 | 2* @) ]. }( ^4 U) g
2008-01-18 00:22:02 | 但丁 | 2
; e, f; U& t8 R6 ]4 q/ c5 m! m
) `" D' H+ s+ O( `; P點解大家都down兩次? XD

1 ?, {2 |3 R' y  j  {" [# j
. Y7 w" a2 w* R2 o8 B我第一次開睇左2秒就close 左8 P5 S; ^* M7 y, x) C
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 ]+ F. [: R; W9 c5 i& Q* |- t$ HFilename: DSC01158.JPG
2 q$ S% I# A" Q$ _) u; UDatetime | Downloaded by | Counts7 x7 {  m2 ^0 l. R5 E: `# H  w
2008-01-18 00:25:24 | 阿感 | 2
0 g2 l9 ^3 }% O4 U2008-01-18 00:24:20 | playbr2 | 2
+ b7 W1 E$ J1 }3 J2008-01-18 00:22:02 | 但丁 | 2
0 g4 `# x7 Q: j) g. E6 A2 H0 @3 ^! x0 H& F5 [/ s/ r
點解大家都down兩次? XD

/ Z4 V0 _1 p7 V! l5 U. e

) M, i  r! f/ g' q) G快d捉我錯處
: o& b( R' g7 ~0 _3 h話吾定我都打錯 + - 符號
' E6 t  c+ K- O, e5 A係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
) E8 z+ Y3 E9 w0 s0 Y6 n! `) V# d& D不過,c=101n哥度(解除n係正整數的限制,只是整數)
( m! J% J' E2 t; l" 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~)% d1 c0 w2 H+ m% H, @
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題$ M9 S0 M$ j! ~6 M' {. i
但原先是不知答案,所以唔知有無失根
! A- m  @* @7 a+ u3 b3 T
$ }) }/ ]$ c/ J4 Y  t有時見到題目都感到有點不爽
; }! V% ?1 D+ L( n0 j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% e: k8 W( v/ K0 G
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....4 }8 f# ~  g, n; p, I! I, [

, N6 H6 g7 I- B& m$ }# G) z# z3 M2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:* z+ S+ T* L4 B4 d: d
冇答案ga....
# G# d/ \) v. A
- ~5 D/ w# C$ H2 O& E2條equation solve 唔到3個unknown ga....

: ?3 a6 c$ k6 {4 A" `# Y1 N
6 o8 _" ~( ^( f2 o" Yagree
+ c+ ?0 o$ ?8 l) F& u
7 ~9 u- Q# V% ]6 B6 o2 U- D% P) }" z  m2 equations 2 unknows- d# B% a+ }7 y! ]7 E

% {$ _8 ~6 y# e4 G: Jif 3 unknows there should be 3 equations
- U7 ?5 e6 V. [( m
3 g& h8 U/ Q) T( Pmake it simple 4 S' E, h+ P+ [7 N1 U* R  t( M& P
3 ?* M0 {9 y4 x% |( W
say
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a + b +c = 39 @: _! k: N( w, J5 H; u

1 D% e5 B" _$ D: e2 {! Ga+b = 2, Y8 H+ Z+ D" S6 ]0 G; f* `

( u# m  Y9 d5 v+ q2 s2 Uthen c is 1 ( M4 E, E6 x# d' F+ C* e# D9 T( k

5 h3 t; }4 @& d& ?! ga = 2 - b
6 v* U& F" e, H- V, b' ~% l- D9 C
" p5 \$ y7 {9 {3 S% j. x0 O$ qso 0 = 0 ! d9 i2 j- h1 P5 s# a/ B: D, u
& E$ t4 R- V* ~. q" B( C: f# d

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:9 Y" a7 @6 B, s/ {" N, o
冇答案ga....8 L* f/ z$ x8 c1 D

" N0 k, B  j2 D- Y2條equation solve 唔到3個unknown ga....

( m4 m/ b) x; M, {7 H+ |0 W5 K7 |- P; K2 p9 z  X' d
此言差矣~5 g6 V( [  V- ^; \6 b! t

9 G! _8 {" y, j0 Q6 N/ V+ Y4 p# y2條equation solve 唔到3個unknown ga
! |1 d( d# i& [5 M0 S' B) V! V還欠一個條件,就是3條equation都是linear independent(線性無關)的+ Z: p% q0 q# V9 k' W5 G, r/ A- F

7 r' C$ V% R2 L4 f# ^8 k簡單點說,多元一次方程就是線性方程的一個例子
) W1 A2 Z# D* Q3 f4 `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9 p; v1 C" G' c( J8 G1 y4 [
% \  l/ x0 j( m9 d0 c
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~)
' A! {2 _  B7 i3 Q) ^# z' S  X' j; L例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解( {% S5 X' p0 [
有興趣就解解看8 J/ k5 H# h! y$ G: h# O
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:5 A9 N  \* r5 g. e

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1 H0 f8 J+ a6 x0 h不懂的話就問playplay,佢會知答案

+ ]( c; L5 x8 y) E- b) v9 F4 M
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playbr2

Originally posted by sakura310 at  06:47 AM:- k" u* ^, J. I* a( u0 [8 T
捉錯處就唔敢當3 S/ l/ L3 b# }4 v6 ^" z  H
不過,c=101n哥度(解...

  d/ }( ?' ^8 D8 o

" _9 U7 I' H+ g2 a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
# A& W1 V; N9 t+ [! Q% f反而適當地調節一下 , 咁會理性好多
( t% Y# K& y/ r# V就好似隻game 由12粒珠 加到13粒珠咁
5 W0 m: S8 T) ?3 H+ V當''堂''好玩哂" E; a" m0 [- N

9 J9 i& {( y& @' k1 y8 P/ `+ tp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
3 v, |* S' j. p2 @( n9 `3 N* x0 H" v2 r$ V/ \1 Z* V  {

# r0 u+ p* ]$ o( N' D2 A* Xp.s. 求''堂''字正寫...

! I5 p7 G9 ]) D/ Z4 x/ k  G, {0 l已是正寫吧