sakura310

Filename: DSC01158.JPG/ q! \6 I* c% ]' Q" @1 F2 k: u$ q
Datetime | Downloaded by | Counts% N: M* |. n; n6 U8 ~
2008-01-18 00:25:24 | 阿感 | 2' K; {2 |7 ^/ l# Y
2008-01-18 00:24:20 | playbr2 | 2
2 b2 ~. ^! j% Z" T# B* g2008-01-18 00:22:02 | 但丁 | 2  i$ S; l( c9 \8 A% {
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
/ X6 c$ E& Y) d# ^2 p* U7 K9 nFilename: DSC01158.JPG, i8 d( Z& A7 D- M6 J' u5 B. P
Datetime | Downloaded by | Counts5 z* S- S5 X8 Q1 J5 J" m
2008-01-18 00:25:24 | 阿感 | 2/ J$ y5 o$ r( k4 _% C% e
2008-01-18 00:24:20 | playbr2 | 2
1 ^. Q) P: j5 d( s; w0 Q% @2008-01-18 00:22:02 | 但丁 | 2
& p$ |; v$ I: R/ t3 B7 s# e7 i, ?6 q+ }2 N
點解大家都down兩次? XD

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1 l0 w( v1 w( ^( R+ U& f  D* u我第一次開睇左2秒就close 左8 X- }# B; |) C' z1 q
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
4 T/ P% B( I; O" V6 kFilename: DSC01158.JPG* r3 ~# X% _/ g; @$ A
Datetime | Downloaded by | Counts. Q4 n" v: `, W$ V: P7 {$ H  f4 a
2008-01-18 00:25:24 | 阿感 | 2
+ Z+ a4 g2 |: j) L, ^2008-01-18 00:24:20 | playbr2 | 2# A6 r! s6 H! n# m3 y
2008-01-18 00:22:02 | 但丁 | 2( m4 l0 ^2 n2 v3 B

( Y, G) Z" a( {' G) l點解大家都down兩次? XD

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快d捉我錯處
/ s* Y# Y3 B4 e3 ~3 }6 D! A話吾定我都打錯 + - 符號: p% f6 l9 C1 Y' M' c( G
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當4 U& B  [: ]; I, |3 ~, F* S1 D
不過,c=101n哥度(解除n係正整數的限制,只是整數)) u$ ~$ i! G5 s) j$ V
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 q% s3 ^$ a3 R5 v4 P1 R; n" K, q
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
7 @% G6 ]7 u/ D6 _但原先是不知答案,所以唔知有無失根( w, D- f; H, l  m& q& L
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有時見到題目都感到有點不爽8 I8 L. _8 V; M% v% D$ E8 H, c! c
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" Q9 N0 L$ ]- o1 b$ B" @( ~0 V1 P5 \
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....! H7 E) y1 M( W- e

2 }% z: L3 d0 w. V6 e2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:3 r( U2 a& t9 a. N8 |
冇答案ga....: i& h2 O+ z3 _4 [% h
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2條equation solve 唔到3個unknown ga....

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. i% R7 y: V8 Z: }7 L* i% T1 l" h2 equations 2 unknows  u2 h' ]% ?/ X, X: Z0 [. V

% U1 ]) A6 D& P! dif 3 unknows there should be 3 equations 5 ~; r" u- P* ^

4 g8 G4 }  g0 g4 c, qmake it simple + y6 V8 q& E3 D- l$ R

+ s5 j4 K' q, ^) k9 z: Wsay
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a + b +c = 3
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a+b = 2
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. K0 S: Z7 v/ O# Ethen c is 1 - A1 l* i  k& ^/ u* g  o
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a = 2 - b
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0 L' q/ J# ]% }so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 ^* Z0 N5 V9 Z- f4 G1 K: A- m. Q& g
冇答案ga....1 i$ O5 M1 X+ x' N% l) m

( o% `/ \% f- p+ [/ [2條equation solve 唔到3個unknown ga....

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此言差矣~1 Q( R% H; v6 F) [5 h9 ?
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2條equation solve 唔到3個unknown ga
& k& n% z* A' r  s+ _8 w2 v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
5 ?. J2 v7 B4 g5 |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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0 ~5 t, M9 ]. @4 p9 t/ Q- ?3 s, T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~)( E! g$ E  w2 s9 d4 r$ A: \
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解% f8 p' R0 ~9 ?  e, _
有興趣就解解看( E3 s9 r8 C, `4 U% ~" J" J
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:  U( B! g0 \8 k3 U5 G) H& ^  K* Q
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0 Z, P& @( d) |" R5 G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:
' E0 Q% ^/ H3 K捉錯處就唔敢當7 F7 u1 t( \. B+ Q9 G: o& v3 c6 }+ w
不過,c=101n哥度(解...

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. D* X% h. K7 L6 l' R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7 `+ a9 J6 S3 j
反而適當地調節一下 , 咁會理性好多" [) V* S3 ]4 _7 U
就好似隻game 由12粒珠 加到13粒珠咁
8 G8 X- [  e4 {+ }* D6 }) E2 N1 z5 y當''堂''好玩哂
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6 y) H; T. p8 \) ~p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

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已是正寫吧