sakura310

Filename: DSC01158.JPG
2 [5 e/ p# T2 J2 M! J2 D, l/ m* M6 ZDatetime | Downloaded by | Counts% t) \/ @3 \+ C% T
2008-01-18 00:25:24 | 阿感 | 2
1 V! D( [0 p, c6 W" l9 G% l5 Z3 I: ^+ q2008-01-18 00:24:20 | playbr2 | 22 w5 j  u" e) n
2008-01-18 00:22:02 | 但丁 | 2+ u) n  ]9 P8 q7 I" P, _4 s

; u; C" u: s& t% B: u點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:% U4 r+ [8 t3 V! ~
Filename: DSC01158.JPG
$ ~  R( @( I: Y9 m* p( p! _Datetime | Downloaded by | Counts4 m/ E' Z5 k5 G6 f, Q, e0 x* [0 d
2008-01-18 00:25:24 | 阿感 | 2
$ y) z0 f: V: B, y4 F( H1 S2008-01-18 00:24:20 | playbr2 | 2. K( Z8 M, E& C4 l
2008-01-18 00:22:02 | 但丁 | 2/ E% V4 j$ ?6 T; O" t* B7 b

# z7 ?1 b0 c& S: w% e點解大家都down兩次? XD

- O2 l7 {; g) ~9 v( s7 H. D) D& W. P$ i5 R  E4 A) {  ]$ n
我第一次開睇左2秒就close 左" U  I8 t) l- _+ x* t- {5 t
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
/ w* c) W3 S0 Q& B% U& F) WFilename: DSC01158.JPG
/ J' P2 W  h2 a9 h( JDatetime | Downloaded by | Counts
' `( I' z  p( }  r2008-01-18 00:25:24 | 阿感 | 2
- q0 w- h' P7 u; w" ?: |2008-01-18 00:24:20 | playbr2 | 2
/ ?( t$ U! V! s6 o2008-01-18 00:22:02 | 但丁 | 26 L7 N% w0 c3 p, T3 i3 {
; z+ U: P: e, p3 ?4 _9 I4 G
點解大家都down兩次? XD

/ G8 A" ^  S* s
! j5 Q: t2 x2 d% ^4 a% o快d捉我錯處
$ B1 @. H0 g+ F" A話吾定我都打錯 + - 符號9 F) F0 O) Q. t# q4 C. E8 W
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
9 X2 d0 p6 [5 b0 c5 X- `9 Z$ t不過,c=101n哥度(解除n係正整數的限制,只是整數)
( @, n2 ?/ G/ n) n8 A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~)
3 G/ O3 _- ?7 }' m2 M知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
9 |: A/ B& i) f$ ~但原先是不知答案,所以唔知有無失根
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( S6 C6 k: r$ b1 F0 [有時見到題目都感到有點不爽
: j+ N& |( I% f1 W0 U1 Q; M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
  i9 t: R. e$ e8 C( u: n9 n( W! g% 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....9 k/ h0 g9 i' w% O8 P' N7 C

! @8 o+ w2 e2 g* g, \3 h; S, R3 v2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
3 T; {- I: A' w: m/ Z" X冇答案ga....1 i  a  B; `+ j1 Q( k9 M7 N: b

! c9 W  |6 n3 n2條equation solve 唔到3個unknown ga....

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+ q' B: I) [; Y  m2 equations 2 unknows
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if 3 unknows there should be 3 equations
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make it simple - E9 d) o2 u$ X

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a + b +c = 3
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a+b = 2
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then c is 1
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a = 2 - b
& T+ }. @+ J, w% i5 L5 t& @
3 \* }( C& ?! h# q4 S* eso 0 = 0
& h- O' l& P. t+ L5 q
& r' s. p4 n/ r5 J+ w, X

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
* b% m, z0 O: V+ G$ o1 t冇答案ga....7 k' v9 k+ Z2 T9 ~9 Z: \% e; l5 T6 U
0 G% e# k+ Q$ B5 w% V. q, e
2條equation solve 唔到3個unknown ga....

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此言差矣~- \6 g& m% N) b  a
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2條equation solve 唔到3個unknown ga
! c1 `9 \0 J$ K8 H, p4 i" d: Q還欠一個條件,就是3條equation都是linear independent(線性無關)的4 e( l+ H% t, B. c% S2 l
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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
8 _/ r& o% E$ S' c8 z) Z1 x) \3 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
% G7 s- O0 w; n* p, q3 O  Y8 T) ]
# I5 r; R$ ~& K3 f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~)
3 _3 N/ }$ V2 B* p例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
% m& z* E$ t0 k1 F有興趣就解解看
  e* C3 ^5 t9 I( Y" K6 g不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:3 W: B1 p' y/ x6 W0 N+ m
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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:- Z9 T4 ]( {( |9 L) t  _8 O5 p
捉錯處就唔敢當7 Y) R9 _% c/ |" P! l: X2 I
不過,c=101n哥度(解...

2 I( [3 h3 k5 f; X: H# \2 I9 B

' k" g# f3 T( }' `' k4 \; I1 L6 ~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0 h5 R/ b# P% N: H, S0 ?
反而適當地調節一下 , 咁會理性好多
  X0 _6 J) `: P# D# v; \5 q& Q3 Q就好似隻game 由12粒珠 加到13粒珠咁
1 f' l" b3 l7 o( `' V當''堂''好玩哂
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- a0 C* D6 p' {# `p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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5 N+ I/ w: ]% F. R/ ?p.s. 求''堂''字正寫...

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已是正寫吧