sakura310

Filename: DSC01158.JPG6 I) A7 V. _4 V+ @, p  P% W7 w
Datetime | Downloaded by | Counts3 g# \3 l: B& T! _. c( J
2008-01-18 00:25:24 | 阿感 | 2
2 m8 E! E+ ~* k0 ?" \9 r: B2008-01-18 00:24:20 | playbr2 | 2
2 t* Y, B% G# T4 t( `2008-01-18 00:22:02 | 但丁 | 2
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3 D8 b' ?. v4 K# j* S* G點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
1 q5 Y3 R: F+ {+ G( j7 BFilename: DSC01158.JPG
/ e9 L0 {2 A/ ]6 z  \; U* R1 t8 mDatetime | Downloaded by | Counts  P5 p+ u3 g$ p4 X3 M' o
2008-01-18 00:25:24 | 阿感 | 24 B1 D" D2 p, S" v1 ?
2008-01-18 00:24:20 | playbr2 | 2: `" S8 N' l. J6 S1 t4 c
2008-01-18 00:22:02 | 但丁 | 2
; {6 S- R6 s5 ^; D3 W$ Z3 y% _2 h, q0 p; f( f! q* {( o; m* b7 o
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
3 T/ X3 T: H" a) I" {之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:9 I* L/ b' j$ j' T; Z! k
Filename: DSC01158.JPG# T9 X8 t0 c  M$ Q8 R3 k( _# P! O
Datetime | Downloaded by | Counts; X# J; R' a1 B5 H5 Z/ ?& h
2008-01-18 00:25:24 | 阿感 | 22 g8 O' a6 v' J# Z2 U$ W
2008-01-18 00:24:20 | playbr2 | 22 {5 o0 I( w! M; L8 r& V
2008-01-18 00:22:02 | 但丁 | 22 @5 C! j, k( ]8 X2 l9 m

1 M) j, h; g- \' p2 ^點解大家都down兩次? XD

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+ u; }0 e7 b: N快d捉我錯處
/ a5 z6 b. X$ u" l; ?話吾定我都打錯 + - 符號! m) i" z5 m9 w
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當+ u3 q. l& ]% B5 Z6 g* v
不過,c=101n哥度(解除n係正整數的限制,只是整數)& G3 }8 `' c* v; U' v4 `. N
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~)
. O( @- |5 p6 b& _知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
; y' z3 N, H; U0 }但原先是不知答案,所以唔知有無失根
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1 J9 \$ E/ q; c% L/ m. D1 i有時見到題目都感到有點不爽
  M" S$ p, W$ G* a, e- T; z- O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- c% E# R& e4 V2 {  ?9 T) b; 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....; e( ~7 N2 o& o4 b" ?
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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:1 s" n; O) ^% p* ^4 j/ z
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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" ^& ?: h  _0 aagree 8 [7 a" u9 d. i) \
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2 equations 2 unknows
  b: P* m' h- _6 _
$ ~' }  H4 ?$ [+ ]" wif 3 unknows there should be 3 equations
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make it simple
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4 j9 R* O& v* l, O' Y/ ]say
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: {/ {/ ~# c5 }5 G% G* va + b +c = 3
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a+b = 23 w+ P) e# A; C2 x" L9 J5 H

( C6 y' n- c% U7 U$ mthen c is 1
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a = 2 - b
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5 ]; J( ?( ~# F! P0 x  wso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' S0 ?9 D- B* n冇答案ga....8 v* t1 a' N9 s) z( k

! }( T. [" B) B4 a& }+ {2條equation solve 唔到3個unknown ga....

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9 N* X) q0 {) }7 q8 _2 J# t; R( r# {; }此言差矣~
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$ O1 b' S" j* [" `, ^* i3 D' _, j+ y2條equation solve 唔到3個unknown ga" U$ c# `9 ]( C/ ?
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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4 W; Z9 {1 @, y5 ?; w4 S1 P% M簡單點說,多元一次方程就是線性方程的一個例子
( U3 f# V3 D" g. g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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5 V4 g3 ?% _6 o1 {" A& u; E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* Y+ b% T, K
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
% k0 K3 {3 y! a9 t! ~7 f/ q有興趣就解解看& e- U, g$ r) @, n
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:: u9 @7 C6 \3 c  [% T5 V* }

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" q8 c7 e. F! ~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:
- t( `; I. J' A捉錯處就唔敢當6 \/ b& c) Y+ h* K' u! c0 }1 ^
不過,c=101n哥度(解...

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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; z4 _. P9 X$ w7 E2 L- f6 J
反而適當地調節一下 , 咁會理性好多
5 n4 |) m4 ~7 S' P- b2 [5 g就好似隻game 由12粒珠 加到13粒珠咁- w9 k+ z1 U/ z. x& ~# J5 l/ L0 S
當''堂''好玩哂
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# Z5 E6 ^0 r+ Op.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:9 _+ p# ~  I1 P7 i- p

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p.s. 求''堂''字正寫...

+ T4 w8 z; H% j1 `# l: i3 o+ S已是正寫吧