sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
" h) k' ]5 ^% ^1 Z, ?; w5 m- O2008-01-18 00:24:20 | playbr2 | 2
& x( a$ U; e) m( h+ w& `9 \3 ?2008-01-18 00:22:02 | 但丁 | 2& U' D# [/ s$ H% v# K
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
6 z0 Q. ]; p. |6 ?2 H' |* V8 p% ^( @Filename: DSC01158.JPG# O+ Q$ ~) c/ ?1 U# q; ]
Datetime | Downloaded by | Counts
! J! X7 P  c/ p5 K+ T' L3 Y/ e  b2008-01-18 00:25:24 | 阿感 | 2' d2 G, g1 X" `1 D
2008-01-18 00:24:20 | playbr2 | 2
! C1 R5 q; A! r1 {. o5 ^) Z! R, s2008-01-18 00:22:02 | 但丁 | 2
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" d! a, g% W. s+ W0 [! _0 f點解大家都down兩次? XD

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我第一次開睇左2秒就close 左
, H) X9 Y, e" ]) O) A5 ]/ s0 c之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:5 S4 Z! V# L; l) |+ ~1 l' n4 u4 X$ h
Filename: DSC01158.JPG
- @2 s8 r7 j) G$ D/ `; jDatetime | Downloaded by | Counts5 E( x( k% ]0 j1 u  @! a
2008-01-18 00:25:24 | 阿感 | 2' D  o% z, A# a. F: v$ x
2008-01-18 00:24:20 | playbr2 | 2
  }0 {6 ^: V# R/ a2008-01-18 00:22:02 | 但丁 | 22 V+ z% h" k0 b  [! v- n4 }- K
8 x' V6 m) X* h: {, |3 l
點解大家都down兩次? XD

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# v5 N# s% v* n7 B$ |) H! Z" m3 Y快d捉我錯處
1 i6 C! l+ _# Z% n話吾定我都打錯 + - 符號/ U: p$ p  ?  x2 T' P
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當' K2 ~. V3 F/ ?- S+ s
不過,c=101n哥度(解除n係正整數的限制,只是整數)
" P) Y5 C# a& ^8 m8 ?1 e; c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 p( l9 ~- k% x; `7 ?
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
8 m  F; z" j" M8 a# M! ~+ {但原先是不知答案,所以唔知有無失根* n/ X/ i8 p* a

0 F5 R+ r& K' l! e: q有時見到題目都感到有點不爽% E7 H. \4 r5 d& L# Z
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
, X4 j" x/ E; ~6 q0 f1 b5 r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....! U8 A) D+ B' H. e8 O9 M3 H
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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:( h  j! ?6 G4 C; A7 W6 i
冇答案ga....: c! g1 V# D( N, {0 r4 O* u6 P$ x

8 Z3 j! v8 j+ R4 y2條equation solve 唔到3個unknown ga....

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- H1 w0 ?: u0 Bagree
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2 equations 2 unknows+ |3 ~" ?3 v/ C# X. f( \9 P, G& G

* x* s7 |5 f, ~5 yif 3 unknows there should be 3 equations
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$ Q" ~% e$ F1 q1 F' c  o* D7 Zmake it simple $ X6 ?, e6 B  Y# x- g, s( v  E9 N
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say
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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
( s/ D$ n+ W# ^+ Q) Z$ G" d) h" Z; s
so 0 = 0 5 ?1 d! b* \0 P& X: R0 u$ R

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:+ w! j9 J# _$ f( ]9 @0 u. q0 m
冇答案ga....# P0 L4 {) @. v& a) Z# d) v( A
# K; b! _" ^5 I$ A, I6 i
2條equation solve 唔到3個unknown ga....

0 V; r+ r) v2 B. }0 @1 F& y2 z6 {; v3 k% h) I+ X! v- p
此言差矣~' f4 R, f$ t* U
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2條equation solve 唔到3個unknown ga" t. F: @$ I' O9 m, v% G, E  y9 m
還欠一個條件,就是3條equation都是linear independent(線性無關)的  [2 i( S3 D2 y, H& X1 \7 O

8 {8 ~1 j0 K( m7 X簡單點說,多元一次方程就是線性方程的一個例子
+ D) C* i) v9 r& V3 S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 N+ X/ H6 w4 D) D# w/ z4 j
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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~)
: H! _$ |8 J3 ~. i例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解2 o1 x# w) J5 f  A" X! [. B
有興趣就解解看  _/ }% @5 q+ t* [6 i+ A! P' j
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:' D% j' `/ k5 y9 D
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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:; h$ o; B. l7 D8 T$ `8 |  B7 _
捉錯處就唔敢當+ f" A" i& h2 i
不過,c=101n哥度(解...

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2 W1 s# V& ?/ Y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+ h$ _( N8 h, J5 N& h" }8 u$ A
反而適當地調節一下 , 咁會理性好多/ ]3 Q# W, _, v# H
就好似隻game 由12粒珠 加到13粒珠咁
. n- ]& T4 E5 E' G$ J& \% S* \當''堂''好玩哂
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! H1 A+ w2 A: E0 g: Tp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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! @, {. M1 z' m9 Vp.s. 求''堂''字正寫...

3 `0 y7 R- B" p$ N# `8 B* w/ N已是正寫吧