sakura310

Filename: DSC01158.JPG
# }4 ?/ @& P! w7 t* BDatetime | Downloaded by | Counts
! B  t" C+ A7 l) D+ \9 K2008-01-18 00:25:24 | 阿感 | 2. M6 ^% m4 x& J* F" s$ U& l
2008-01-18 00:24:20 | playbr2 | 2$ R* p3 |" {4 U' x& l- y7 E5 u2 w
2008-01-18 00:22:02 | 但丁 | 2
% r" n; T) b: j0 o+ f" X) ]3 y, P& U7 G, a6 L9 l0 B
點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
# d+ }2 n, @- U" j' l; J- _7 fFilename: DSC01158.JPG: N/ ]% C3 `; s; U( x/ j. t
Datetime | Downloaded by | Counts
1 I3 w+ v3 d# o, Z" Z2008-01-18 00:25:24 | 阿感 | 2
3 V! N1 L- \* e8 U7 K2008-01-18 00:24:20 | playbr2 | 2
) x' P2 w, W4 B# r" X2008-01-18 00:22:02 | 但丁 | 2. b2 u3 K4 h* {5 |0 b0 |! ?$ |% C

5 M. q$ A2 Z% e$ n: U. {* A點解大家都down兩次? XD

$ A2 l' F9 W1 A' R, \
# l* }. n& ?2 F( T
我第一次開睇左2秒就close 左  p* D4 I3 M3 i
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* }# F1 R9 o( \Filename: DSC01158.JPG1 h( O% D" h) X, P! @
Datetime | Downloaded by | Counts2 t3 W& _, z" ]9 l/ v" F/ K( t
2008-01-18 00:25:24 | 阿感 | 2
& M( S! x0 \& W7 k9 N( u' [5 f( R; n2008-01-18 00:24:20 | playbr2 | 2
( \0 [7 d9 O. Z( B2008-01-18 00:22:02 | 但丁 | 2
: W- ]' q* D' m" E2 p6 [' M' v. d- O' k. q! N2 H* k" I
點解大家都down兩次? XD

, L/ W9 U% c9 H0 e% e; D
; d4 c' K3 _7 O' [  n
快d捉我錯處' Q8 r4 V0 I. _' g8 p3 y+ m
話吾定我都打錯 + - 符號7 z  J: \5 y. H8 L! N2 R
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當* F0 j; }4 F! D) C1 H/ h. X/ M
不過,c=101n哥度(解除n係正整數的限制,只是整數)' c( |% K. D4 }
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~)" b  S, b3 q7 L$ k
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題' {; x+ U9 e; L! F8 P3 ^9 M. V, \3 n
但原先是不知答案,所以唔知有無失根
* y7 O1 Q5 }2 E2 v3 A: H1 q& \! R. U1 r$ @7 J4 z
有時見到題目都感到有點不爽
- Q! z) S2 ^6 e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% u! |( [7 H. H, K
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....) \  X  g$ i- F1 I+ X

" v) H8 y- e# y! r2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
  B* J+ ?7 B. U* a' Q冇答案ga....6 S0 G' @6 K4 Z6 ]% `

0 E3 U7 V% W+ X  t6 p6 y2條equation solve 唔到3個unknown ga....

! v6 @! h+ d/ @( J- k. r; o) X* K* r4 `1 G; c! q  b
agree 8 U5 z. l* t+ ~2 m3 ]1 o$ z+ ]
6 E9 w; y% m2 w( n" |$ s* U2 P
2 equations 2 unknows
$ H: K+ l, e7 u4 S0 e: m* T# }* E0 J5 A# U
if 3 unknows there should be 3 equations
) Z: T0 P/ r. }* L* F$ P5 g- n4 `3 U: m+ a- x3 w; o
make it simple
" o# u4 P+ T8 }3 g  ~* f6 _% W
8 b# M1 A  }$ g; _: I- ?5 \! ]; Esay
( J7 _  A/ {  B6 A+ s* a0 G0 d7 P3 B$ z1 h" V
a + b +c = 36 p. N7 f3 h( r- e
6 u7 `% g$ N  C1 M# y
a+b = 2
0 {% I1 ^" E* ~+ A9 d" x5 F2 U) ]! `( Z/ A5 n$ d' M1 n: [( }9 l
then c is 1 ! y+ z* R4 F2 ]) T4 q9 O. o+ _

. m) y5 \! X1 E+ Ea = 2 - b $ c6 y/ n% b, F7 u& C

9 J. n2 H4 S& cso 0 = 0 - L! B, d3 m5 z2 @: D4 P

7 r) w5 s5 i/ [$ t. p6 h; z

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
2 p7 J5 ?9 W, P( N' I冇答案ga....* X7 ]8 N  }: V% d
' D' Z1 Q. A& k( M0 ~% a) E
2條equation solve 唔到3個unknown ga....

7 E9 ], ^" j- g  ^3 e% K! n& g$ ^2 a  D) }* M
此言差矣~/ K: X9 c2 `7 c* ]9 ]

9 J1 \5 ~( C9 a% I" J2條equation solve 唔到3個unknown ga$ D. r/ t% y8 H8 {+ Y2 y( i! i) P
還欠一個條件,就是3條equation都是linear independent(線性無關)的
* Z" o$ S, L8 S
! S+ w+ E1 T' y4 G簡單點說,多元一次方程就是線性方程的一個例子
* E2 e2 j% N8 N! t# l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& F' `6 A, L. ]% i

0 n3 ]8 r6 f& T5 I" z1 H' s" m* q# W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~)
2 R/ H' O4 Q2 c2 H$ w* p例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解0 u: m' `9 Q6 X& k/ Z
有興趣就解解看
9 j$ U& ~% K' R' m& `9 r不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
9 o8 ]9 l' ~( R0 b# Y0 i& Z  ~  b

9 G5 I  s+ f$ G0 D; ?7 @/ e5 U不懂的話就問playplay,佢會知答案

% z9 t3 ]% j0 A) u/ N  y6 R: ?5 _4 O3 j% U; r7 |  K0 D; D

playbr2

Originally posted by sakura310 at  06:47 AM:
% P$ T5 K+ K# D5 h捉錯處就唔敢當
5 @8 d+ x3 _3 G/ U- p$ k4 e% U: J: Z1 P不過,c=101n哥度(解...

+ y: Q5 F; Q0 m& l% U) f" ~: ?
$ h/ S4 G- x( L+ }. D7 W
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
3 \- Y0 {. d5 q8 v" S6 i反而適當地調節一下 , 咁會理性好多
+ P( a' T. g& M. Z: u* _就好似隻game 由12粒珠 加到13粒珠咁5 Q8 E2 R9 c9 |/ G: |
當''堂''好玩哂
# [9 P$ R$ h/ Q
) e5 \  g9 P1 u9 ~" U5 T8 o8 ~p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
6 X' T/ g) x) ~3 I8 D% B1 J8 b2 i
3 B) K& ?2 z- r' M5 p) n1 j
/ w0 w# T1 Y3 i0 Wp.s. 求''堂''字正寫...

% }- x9 M1 J4 h9 y9 n8 X
已是正寫吧