sakura310

Filename: DSC01158.JPG
4 i0 L) Z) Y5 t) o: ~  m2 [Datetime | Downloaded by | Counts
& A- f4 k( y" p- o  K2008-01-18 00:25:24 | 阿感 | 2
/ z  R/ P0 ^, E3 k* ?, R: }1 V7 x  e2008-01-18 00:24:20 | playbr2 | 2
; Q6 I' r( y8 v! y: G9 D; C& H2008-01-18 00:22:02 | 但丁 | 2
1 g$ n. e8 }( |7 b7 K$ D# w5 ~2 b
- S' T7 k9 u6 o( m" ~. i' e3 A( ?點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
  C: C; Q# t2 m0 E8 S( lFilename: DSC01158.JPG, t% G" V# h3 b- V  X
Datetime | Downloaded by | Counts
1 @- \- u. G5 y! u0 \7 r8 t0 g2 p2008-01-18 00:25:24 | 阿感 | 2  A+ d% W& b* |( [
2008-01-18 00:24:20 | playbr2 | 2# Y! Y2 F7 n& A2 H0 a2 R7 J
2008-01-18 00:22:02 | 但丁 | 2) w; U6 j1 N% \6 _/ W
4 C2 y0 W% P! u  s
點解大家都down兩次? XD

! W( n" e- B, G9 H- F( i2 s/ U. q& s5 r- {( H
我第一次開睇左2秒就close 左
0 b* U, [  H2 t* l- [之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
9 j, G- I  y. s( l/ aFilename: DSC01158.JPG' F0 h- U0 M/ x' ^5 Z, g
Datetime | Downloaded by | Counts! w7 ]" V' w# X8 ~4 L
2008-01-18 00:25:24 | 阿感 | 2
. C% D& a3 W# Y( f9 D4 z2008-01-18 00:24:20 | playbr2 | 2
* g: D0 [1 W) j* V1 }# P2008-01-18 00:22:02 | 但丁 | 2
2 n0 V% i5 U4 o+ t: `& U5 B8 X9 n
點解大家都down兩次? XD

# @; E2 `$ D, _( K: }! X6 |
$ y7 k* F/ N" [% D$ m0 U% I快d捉我錯處- {8 W. m+ H1 g0 z6 e8 |
話吾定我都打錯 + - 符號
. f* h8 M& R, M3 o# S7 ~- ^係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
" d- o( ]8 V& x4 y+ |' i8 l不過,c=101n哥度(解除n係正整數的限制,只是整數)  B+ k8 C2 u3 u$ h5 B
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# S" ]# I" L6 ]* q3 `
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
4 F+ m: W7 m; e! e' o但原先是不知答案,所以唔知有無失根
9 z7 b1 H' i# N8 \  r5 f7 k7 @4 R# [/ ~# r5 x
有時見到題目都感到有點不爽3 d/ Z8 l9 o4 Q+ z' ~% Q6 W
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
- S6 W* S8 l5 D. Q+ q6 Q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% [. ~2 y8 ]- A2 W" P
; i- j" F; L5 G% `2 n7 G$ x2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
! C+ h& D! O5 x冇答案ga....
$ w, y" i1 i, R' u
& ?# A7 h: d, L; \/ N2條equation solve 唔到3個unknown ga....

' L$ ^: Z- C# J' T$ _
$ j8 \  x3 k8 x  \! [; _2 [; ?! J
agree
! w9 E, \0 a- M3 w! e5 \  v# u6 v; B( S0 T% N" c# `
2 equations 2 unknows2 k+ W& M' g# l: U' x0 X( \

' P* w5 ~9 `: {8 P+ Tif 3 unknows there should be 3 equations
" _% d; M3 h# U! N) d
3 ?9 Q3 L  J* g3 H; \2 E" Amake it simple
; s  G& }1 T$ @# S1 M, d6 ]4 Y9 s! u8 P! r3 T* o  A. r8 u9 v/ G! s2 J
say
$ s# C# Y% U0 d4 w( U3 Q' B
' z) F2 `5 E& e: ^- [( Ga + b +c = 3
8 L7 I7 s& ~; {% n7 B9 g! t: a$ v2 e6 {
a+b = 2. n* H0 `+ q- O0 H/ K* F8 a" V

2 D' s% M! \- p1 {, Mthen c is 1 8 }; v& i6 v) T+ W; i' z

9 i' ]7 @3 ?  ta = 2 - b ! j! P) q1 q8 W" S
, Q# d/ u9 A( }" }; A/ B
so 0 = 0 1 `9 F. f6 u1 J- ^  x1 B% t
% v0 l" l( P% N, @

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:7 x4 g  t* b6 D0 ?  u" p
冇答案ga....
! D+ s, v  N8 v( D! O
0 v& p6 _( @! s9 u/ \2條equation solve 唔到3個unknown ga....

; [0 {6 p" n$ U+ e2 F7 Z# G( t8 c
此言差矣~0 s3 L. P' L$ u5 s; `

$ A/ C% T$ e+ w; j4 @* D8 Z$ q8 u! B2條equation solve 唔到3個unknown ga
* `# h, P" j: j還欠一個條件,就是3條equation都是linear independent(線性無關)的
# O5 X" r8 l2 s# @
0 o, E, f( G% t2 J! ^1 D簡單點說,多元一次方程就是線性方程的一個例子
) l1 a) ^1 C' h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
4 z; N: F+ \, J4 Z; x
! l# U2 A  G- m, _/ T3 e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 b  m7 }5 I* {5 g' h例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解1 [; `9 F( I( ~7 d+ s
有興趣就解解看4 @+ ~) g4 m' Z& e9 @# r
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
' b% T8 {( C5 r! |+ X5 `; |( S% H" t* X1 N
; [8 }( K/ o1 P1 w
不懂的話就問playplay,佢會知答案

) J- X6 Q2 W/ A* Y
6 ?5 ]4 F* R% r4 ~( P# [! }

playbr2

Originally posted by sakura310 at  06:47 AM:
+ ]3 V4 ~( [  S1 ]4 v5 ~捉錯處就唔敢當1 ^2 }$ o- F+ u$ F% |
不過,c=101n哥度(解...

0 I7 [$ y+ y3 R( ^$ `5 a  o9 k

+ @' x/ |1 n2 ~% a; r$ C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* U) R; [) m# M. B3 {4 K$ `. {
反而適當地調節一下 , 咁會理性好多7 d1 N9 f  ~2 }9 m1 g5 k
就好似隻game 由12粒珠 加到13粒珠咁
  A6 H+ s. ?# P3 P1 ]. p6 Q( z當''堂''好玩哂. H6 ?8 x6 [6 z
& C3 g9 ~! u  V# L5 T/ F- x" t
p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
- b% `$ I' H$ `$ O8 a* K! t4 ^7 b! A2 k& Q: {. r
) ~( W! q& g" S/ M0 f+ d
p.s. 求''堂''字正寫...

- S. g% c; D7 d5 p6 r
已是正寫吧