sakura310

Filename: DSC01158.JPG
% t( i3 D) [4 a" T2 g0 L- n1 Y4 YDatetime | Downloaded by | Counts
! a4 l$ k2 A4 R" ^2008-01-18 00:25:24 | 阿感 | 2+ V% E& u7 V, c# F
2008-01-18 00:24:20 | playbr2 | 2! z4 u9 j( m; [! P- }' \
2008-01-18 00:22:02 | 但丁 | 2
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' T; O/ ~, V0 B5 x點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
# M# ]3 M$ ?& i) c8 ]6 A2 JFilename: DSC01158.JPG  }7 e% I+ r  ?3 e" M, u  C# i
Datetime | Downloaded by | Counts
9 J1 \' P( p" O! `2008-01-18 00:25:24 | 阿感 | 2( K9 H2 L. d* X' n% W
2008-01-18 00:24:20 | playbr2 | 2
. d$ ]9 p3 }/ ?+ a4 {" F2008-01-18 00:22:02 | 但丁 | 2) ~: A4 q$ t6 p5 K8 {. F* Y  ?
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點解大家都down兩次? XD

3 ?5 A$ Z  X) p7 L5 g& \3 h( j: ^  x

" R. R- E8 r' Q, ^* e- G我第一次開睇左2秒就close 左6 F0 F" _% I! ~6 L
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
7 r8 T) _" H. A" L4 aFilename: DSC01158.JPG# B! ]# G$ q8 A; s* ?4 g
Datetime | Downloaded by | Counts
2 ?; x& L# J" i) L2008-01-18 00:25:24 | 阿感 | 2
8 _" P% ?) y! h! m7 ]) b2008-01-18 00:24:20 | playbr2 | 2
: n6 E# t2 y' i: i5 I0 D4 O2008-01-18 00:22:02 | 但丁 | 2
; m3 R1 E2 {* u" e" F2 Z5 b5 z7 @, g8 V
點解大家都down兩次? XD

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- F$ r0 Z1 l  D# p- u9 l+ n* D1 c快d捉我錯處
- x4 i8 |; j% @- n話吾定我都打錯 + - 符號! `$ `7 x6 |/ K% O
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
$ M) G% w- H3 ]( _不過,c=101n哥度(解除n係正整數的限制,只是整數)
* _2 ]* K% C" f2 L) H! ^; R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~)
; O9 ~# y* u6 b知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題, k/ P5 m! ]- S
但原先是不知答案,所以唔知有無失根
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+ `4 J% |4 l. x有時見到題目都感到有點不爽9 V* o3 ~, V. J, g9 \, q& |
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
1 E. Q3 |: {9 P7 l' L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....
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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
! ~% ^/ S1 f- t冇答案ga....
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2 d, y) Z0 F) q2條equation solve 唔到3個unknown ga....

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agree 4 B. L3 y) e2 G. V% ]$ E
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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make it simple / o. h2 C. P+ G6 W. f9 c
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say , S" F" t) K1 \

3 c/ L9 D! D8 U4 o2 N% {a + b +c = 3
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a+b = 2% }9 t1 l) k6 X$ i$ f+ ]
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then c is 1 6 k) y- B8 R$ t- C, u' e+ X
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a = 2 - b ( D/ ]% r3 o" l) c3 E) j

7 I# |0 A$ O% J; a& hso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:7 c/ Q5 Z" q. R" b0 f7 o$ Z
冇答案ga....
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, E+ P; k  B$ E; w  E, l7 }/ d2條equation solve 唔到3個unknown ga....

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  y* B' K" Q1 ?0 L3 b此言差矣~+ u7 [0 R- o) u+ k5 T( \. E

! m1 F4 N" t( \$ r' u2條equation solve 唔到3個unknown ga
6 u# p4 _4 H! O. K$ F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! W, o, g( G" S$ z' {
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
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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~)
/ R  p! w# g) p例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
0 k1 ]+ M. k1 t/ Z% P, M有興趣就解解看
! j9 p0 K, `7 G' V0 h+ F; a: V4 m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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# N5 T/ [2 _+ I% Q2 H: Y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:
% M8 P- w9 @7 K  J捉錯處就唔敢當2 `3 o$ K! o4 x8 F2 x- x
不過,c=101n哥度(解...

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+ n' h' r. d  V* h7 K" h' i9 f
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
6 _, `2 ^! Z# |反而適當地調節一下 , 咁會理性好多. }, h! S$ N. t$ G8 [. I
就好似隻game 由12粒珠 加到13粒珠咁( G0 u* e$ k  r0 Q9 p2 H
當''堂''好玩哂6 w! [2 g& Z5 |$ ]$ h- ?

. z7 |; d0 P' R4 ]2 @0 _5 Hp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:* B' ~# O& s' k, R4 z
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8 V" y/ C6 p6 D- E  W+ Yp.s. 求''堂''字正寫...

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已是正寫吧