sakura310

Filename: DSC01158.JPG9 V3 c* X2 |: w+ ^' d! s$ H
Datetime | Downloaded by | Counts
) ^. u; `! q  j$ l0 h# s! V2008-01-18 00:25:24 | 阿感 | 26 l2 z5 k& ~) {: Y) ?- v. e9 s
2008-01-18 00:24:20 | playbr2 | 2; N/ k( `( K% X5 S
2008-01-18 00:22:02 | 但丁 | 28 B4 B- k; `9 n% g4 @& s
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
" @) u+ ^# ?/ w" A4 G( Y" WFilename: DSC01158.JPG
6 W2 E; S4 V' x% f  z/ y" ^$ @. b) UDatetime | Downloaded by | Counts
2 H. F) X! E1 X7 b; t. d2 F5 t5 c  k2008-01-18 00:25:24 | 阿感 | 25 T0 y9 g0 r! t; i
2008-01-18 00:24:20 | playbr2 | 2
( M5 b* x+ {/ N2008-01-18 00:22:02 | 但丁 | 2. k; X( {# O) I: P
3 p2 W9 f5 n$ d+ F0 W
點解大家都down兩次? XD

1 h' u( Y$ `* z1 k$ f7 P- U; \0 l3 p; w% `
我第一次開睇左2秒就close 左# I2 W2 g& q6 b5 `
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:7 _& f% Q/ b! q. P* a
Filename: DSC01158.JPG) r' S5 J/ D7 J' D% @+ E
Datetime | Downloaded by | Counts6 J1 l* _: }! f: ?- {' m
2008-01-18 00:25:24 | 阿感 | 2) S; m0 p: _- }# j0 p
2008-01-18 00:24:20 | playbr2 | 24 A% y) Z, V) W
2008-01-18 00:22:02 | 但丁 | 2- ?, d& K$ F3 P7 D

; ]. f4 k- n( X; E1 v( V點解大家都down兩次? XD

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快d捉我錯處
$ L- j, f& E; }$ s% j7 {" d2 y/ Y話吾定我都打錯 + - 符號
; M' L. h2 Q( h9 ^, W係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
- W3 O4 H  m+ b0 C4 J不過,c=101n哥度(解除n係正整數的限制,只是整數)
* U3 W( h/ b' @. F+ q8 ~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~)7 Q1 p( T0 f4 _3 S7 D2 S/ G
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
0 V3 k- W# m; L, M2 \但原先是不知答案,所以唔知有無失根
4 V& D% v$ B( Y$ n; x! ?  `% q
$ S* x+ k2 w/ k有時見到題目都感到有點不爽
8 K" [) y$ T" R( L) ^# O+ b: B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
4 `  z0 n- X9 d' O" Q$ y9 J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 J1 e5 Y5 l( S0 r( Q& E; G
% Z7 t8 h6 L7 d% z& t: ]) j3 O4 d2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
/ c; R( }- S8 _& I冇答案ga....
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. f3 V: o# @5 w, T4 v5 C4 @7 _! _( Y2條equation solve 唔到3個unknown ga....

4 j! o% M8 N& }( _6 u' I: O; G
/ k! V# Z$ `# W  j$ C8 u% J4 g2 O" @+ Lagree
0 |! a" b2 Z8 D+ {  }  H% i4 o* s# m2 O( F1 k# V; ~+ ?
2 equations 2 unknows
$ |) L# C) `1 u- n  b4 y- t
4 B/ A( a% o, P- i6 `4 ~' a$ S! rif 3 unknows there should be 3 equations / x8 _( n0 B; h3 w; z% w! [
4 Y7 ^! y& t( m/ T( B: S1 Q
make it simple 4 H8 h; r8 J$ F1 \5 [7 V2 s

: _: T/ b4 s7 [say , O2 d* B) o; R# |- D( l5 [( J

) C: Q  ~& k% C$ K/ ]a + b +c = 3
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a+b = 2/ [* V3 E& X, k& J, b
  o4 a, C/ d; \' S  A
then c is 1 6 W+ t, m2 Z! h. w
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a = 2 - b 1 f, L0 l6 u* |+ j

$ ~. B* k2 C& X: |6 Rso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
4 p: [* d- D: y$ ~/ W. c. L冇答案ga....
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9 M$ y: O! d' e. B& W- A( b2條equation solve 唔到3個unknown ga....

/ K7 Y# D2 q# _& e1 h' _" d& P: @# d# C1 T  B* `& b$ v' Z* L$ |
此言差矣~, o" U" m3 F2 A- x
+ j3 ]4 H1 h7 ]) j0 P4 D5 e0 z0 g
2條equation solve 唔到3個unknown ga
' _0 }# f2 f6 d8 E$ W8 I: C) f" F  U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" G, e  i1 Y! V
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8 |8 r  r$ |8 i

- [7 K: P' n$ r& s5 l% K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~)
/ V" x$ H; Y, |" L$ F: C例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解4 U+ G" i( p* i% r
有興趣就解解看% n" c& e; t3 g% i1 }! ~1 D* G
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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! @% ~9 D+ ^6 q4 w- h4 a) C不懂的話就問playplay,佢會知答案

- ~1 R$ C+ x0 X8 `/ h; j

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playbr2

Originally posted by sakura310 at  06:47 AM:
, B: H+ O1 N* X9 {0 p- ]捉錯處就唔敢當& `' v5 w. Q) h. N0 `( e
不過,c=101n哥度(解...

0 A% x% c$ k: X" L2 y

$ |  t% ~$ V: \4 o8 \# U4 y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! J( F1 `! p3 |
反而適當地調節一下 , 咁會理性好多
" f& o  m5 N& i% }" D$ ^. E( O' X就好似隻game 由12粒珠 加到13粒珠咁! ~% C; M, D' ~
當''堂''好玩哂; D0 \- R: A9 @  R' U5 p; i! R

7 |5 d8 x% G# Tp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:. U0 O# z0 j: g% p0 E) v: V, h
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6 g  Y1 T) \, o, Z0 t1 cp.s. 求''堂''字正寫...

: b9 D1 M- N8 x5 U7 ?. M7 ^已是正寫吧