sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2& t- a" B) p: h& X% d$ X
2008-01-18 00:24:20 | playbr2 | 2+ Y9 ]( F0 j  X4 K6 W1 d0 z
2008-01-18 00:22:02 | 但丁 | 2
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" c2 h# y2 U; U- H& k1 q% u0 D+ V點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
! {$ x: F+ k4 v# d1 KFilename: DSC01158.JPG
, V+ Q5 g6 @6 c( O0 lDatetime | Downloaded by | Counts
4 s" W+ a2 ]3 V* M2008-01-18 00:25:24 | 阿感 | 2% }8 i% C6 s: v% R9 w
2008-01-18 00:24:20 | playbr2 | 2: X+ W" ~/ l) I" n7 C+ ^- s
2008-01-18 00:22:02 | 但丁 | 2
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# [- U# `! T, P9 q# @點解大家都down兩次? XD

9 M( u0 n! D0 s* B% D  k

! @/ ^( X" @9 V2 h/ j/ u- ?我第一次開睇左2秒就close 左5 V5 \; U3 c+ ^% F% B
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 L4 ]" ~9 ~5 D, X  hFilename: DSC01158.JPG5 p& Q" Q* a# H; X" A9 |
Datetime | Downloaded by | Counts6 w( s8 }; P1 k: X' y- \
2008-01-18 00:25:24 | 阿感 | 2
& n$ ?6 H. l( R& c: ?+ y2008-01-18 00:24:20 | playbr2 | 2
  _" ^: m0 G$ L5 E% \- {1 X/ X2008-01-18 00:22:02 | 但丁 | 2
- @: e) E0 q7 n! }3 Y" [: d
" b+ e8 J+ n3 i3 q點解大家都down兩次? XD

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快d捉我錯處- N2 m+ P& o6 F
話吾定我都打錯 + - 符號
) E& f* U. U$ }2 U9 C! W係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當1 b7 L  i- M8 I& S5 {
不過,c=101n哥度(解除n係正整數的限制,只是整數)
* U) J6 a, \# M. G3 W; f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~)1 T% m* p+ m0 c8 Y. ^
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題+ p; y( e; V8 y* ?. P
但原先是不知答案,所以唔知有無失根% J+ d2 V: E' [5 E8 N, D! w* W
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有時見到題目都感到有點不爽
6 F/ D9 o; @) c0 e' I8 U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9 l5 @7 |0 t) h' w
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....2 |8 B: H# s; V8 w0 w$ t* R

" D+ \3 T, g3 D6 l/ H* L1 E1 k& h2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
3 N9 I& d  f0 ?; b" m* K! D冇答案ga....- V; T# v) h7 ^+ @& c2 _

8 v; G5 I' [) [2條equation solve 唔到3個unknown ga....

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agree ' A4 s; q8 c& D4 A% @8 F

( X% x# W; l7 b2 equations 2 unknows* f. @" [" \4 i' ?% H  w% M
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if 3 unknows there should be 3 equations
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make it simple # w" O' W! e: S+ c3 y5 l/ p

& N% k- D. L; M" b! y, usay
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a + b +c = 3
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0 c2 r: a4 p5 N0 U2 y. za+b = 2( g: F, A% `+ r' \2 }
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then c is 1
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+ n* j: `- A2 K4 h( N# J1 C1 [% Ya = 2 - b
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) I/ j) Q* J1 d4 t5 kso 0 = 0 $ l8 L1 V( b" J
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:4 k- t& o/ r3 |+ l% L2 k  i
冇答案ga....; G3 ~& E; x. L
& c: ~3 `" j+ v; W9 d
2條equation solve 唔到3個unknown ga....

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6 x" k. ^# y) F" N- v此言差矣~
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$ d: I6 V3 o6 M& y( j7 V2條equation solve 唔到3個unknown ga4 }3 V0 z: y- [- P
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' V$ x% y- I" f4 p
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~)
$ V& Q0 a/ a3 a5 Z* d$ g例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
2 Y! w7 _) }$ t( ]0 M有興趣就解解看
2 q5 L  f% B$ r不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:( e" ^$ @0 x! y1 \) G7 G
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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:- b& U( R0 y) T) H' P% V
捉錯處就唔敢當
' e+ i: O0 Q; @不過,c=101n哥度(解...

# v0 u  A* n$ X5 w
7 N4 |  |# S: L  e$ |1 ]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
( W  l- O/ N" `2 I* `3 I) l反而適當地調節一下 , 咁會理性好多% c) h. z9 q* |% O' J, H
就好似隻game 由12粒珠 加到13粒珠咁
8 x' _; U" c" d* l5 s% |6 h當''堂''好玩哂' h1 m- R2 F7 `- {, J( _: I

1 i; Z/ {* |' U7 _7 T7 Vp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:2 s/ c/ j$ B, i2 i( h7 `' L) F9 S

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. W8 C/ R  i+ A- k$ c, S4 P( n8 jp.s. 求''堂''字正寫...

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已是正寫吧