sakura310

Filename: DSC01158.JPG) Y& ?& w4 n! o" N( Z
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2008-01-18 00:25:24 | 阿感 | 2, H# y, g# n# y# u
2008-01-18 00:24:20 | playbr2 | 2' z" F5 q1 [6 R) \' @& F
2008-01-18 00:22:02 | 但丁 | 2' a  H. G& C  K, h* U1 B7 n, \0 {1 `

# K) ?( O$ i9 T點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
, t4 @; P$ K! N; F- iFilename: DSC01158.JPG
% Y+ S2 i- W1 I; \0 o! H" eDatetime | Downloaded by | Counts
$ [, p+ v% x$ X" K2008-01-18 00:25:24 | 阿感 | 2& n  g. C" P! |
2008-01-18 00:24:20 | playbr2 | 2  X! r2 X1 H. u; ^" k& [$ Z
2008-01-18 00:22:02 | 但丁 | 2
4 ~- i4 w" W6 f. K" T9 n7 p9 K* }! G/ c: q) j" m
點解大家都down兩次? XD

$ U+ a; v9 h2 }' c4 w  m- p% q
, c/ P5 G2 o6 m$ a( z我第一次開睇左2秒就close 左
+ O1 ?* C$ p# h0 N+ A9 \: x! l, v9 ]: E* b之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:5 e0 T- p1 c! B. V9 k& Q( ~2 O
Filename: DSC01158.JPG& G7 I7 e) j! \* C- p. R1 \
Datetime | Downloaded by | Counts9 s/ u! \+ K6 R# w
2008-01-18 00:25:24 | 阿感 | 2
3 M. ~3 X, X% ?6 m7 I! h: L2008-01-18 00:24:20 | playbr2 | 2) U  |. i, D7 x) G& E" `, b
2008-01-18 00:22:02 | 但丁 | 2- n2 C- D7 u! A: Y0 @4 c6 y

( k7 h2 b, }- C1 H點解大家都down兩次? XD

0 h7 Z* M% i, z. R/ J# T! E+ c+ |- H" R  H
快d捉我錯處
/ Y. P6 h; z5 t話吾定我都打錯 + - 符號
6 w# |0 E0 L# T7 v' Z. O4 P. _係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
: w* S# W7 H: I不過,c=101n哥度(解除n係正整數的限制,只是整數)
* t$ X3 ~4 h# j3 ^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~)
- H9 a$ ~+ x2 X& r知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
, c1 ^- d3 l7 V4 F但原先是不知答案,所以唔知有無失根+ u2 ^: n) X. K" E

7 Y8 T! Q: H, @2 E8 Q有時見到題目都感到有點不爽
" A+ T8 P  O$ R. v8 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
/ F6 o2 y$ j. |5 H: z) ?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..... Z3 `+ Q" x0 @  t4 V

8 o$ T$ ~% ?: c6 l# x. \/ U2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
0 {4 [7 j: t8 z& Q; V4 N+ k3 ?冇答案ga....
6 R: ~6 ^) \/ x' y( |6 L" _/ D( X+ W* _/ J3 c
2條equation solve 唔到3個unknown ga....

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" H# M1 a9 i( T# n) n" Gagree
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/ ]# Q% C5 }) ?8 _9 b2 equations 2 unknows
* {: H! a* ~# G7 r7 S) K6 S& I% \( z1 S6 w& M
if 3 unknows there should be 3 equations
5 t- D2 Y/ C# j
( q( {3 D- C( ^5 |+ Nmake it simple
+ [5 X: r0 E  w" c
" V! O2 C7 [2 i' dsay $ c1 A% S4 R8 x

2 ?: M+ h3 L# c" K; v* H, Qa + b +c = 3, I2 P! M; Y4 W# m' t

+ h  f* `% [" fa+b = 28 F' _6 H: f9 \0 \0 A6 t* H4 ]
1 {) q9 q# l* R6 `- @5 Z5 Y
then c is 1
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a = 2 - b   F  }% }$ `# W6 T

9 }4 |$ q( c  f% Y- rso 0 = 0
# n5 [+ v8 Y  g; y9 L( ~
0 k' i: x( ?3 N" y! u4 C

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
1 e! `$ v% x( x- c( g4 d9 c7 `: t冇答案ga....1 I# @: ]0 F- k5 ?$ }. T2 ~: O' l
, H, F. d* M. \, G
2條equation solve 唔到3個unknown ga....

' N- p7 a% a) b; `) I8 N3 R- H* K# L
此言差矣~
8 H& \! ^. ~0 y& X) I4 ^1 X7 s9 ?) q& [$ ]/ U
2條equation solve 唔到3個unknown ga# q4 Y+ O9 E: y  @1 G7 y  O! _
還欠一個條件,就是3條equation都是linear independent(線性無關)的+ H5 T! h# e- A" H* `7 s' ?+ x

: G$ I+ c" P3 e- R簡單點說,多元一次方程就是線性方程的一個例子
8 ]* [. U% I8 ^/ W; {8 V' 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8 B6 k1 I, i9 I6 \8 e9 u
+ t3 W3 {6 t3 n' r
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~)
6 d' V. l" U* [  b6 Q0 U例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# A( A$ Q1 R+ W; O有興趣就解解看
. L( \- M) `* Q. _: k" ~* [不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:2 T* N8 C- P) d- B
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% v2 V; K+ E" R1 u( `不懂的話就問playplay,佢會知答案

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playbr2

Originally posted by sakura310 at  06:47 AM:: u* C: L8 x+ X+ c$ U, t
捉錯處就唔敢當
& v: F( i6 G( _4 h( v& K2 {. g8 y不過,c=101n哥度(解...

* a5 c" ~0 n9 j: U0 ]8 y# N2 L
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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/ R% \" ^* R* V' ]5 |
反而適當地調節一下 , 咁會理性好多
9 I1 P3 o3 `+ V3 H$ ~. d- e就好似隻game 由12粒珠 加到13粒珠咁
; K" M7 J. m- L) Z5 E0 ^& j. n" Q當''堂''好玩哂
1 W  \( ^2 h- r% O! a8 o
: h( \  [$ M0 d; ?6 H. ]p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:$ V* X% i* X2 p8 y* c7 {6 O
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p.s. 求''堂''字正寫...

' k( X$ @9 U" B$ v* a- v/ k已是正寫吧