sakura310

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2008-01-18 00:25:24 | 阿感 | 2
+ @. E& g# J$ D. T9 H" G6 k2008-01-18 00:24:20 | playbr2 | 2
1 ^2 C6 L- q  O$ L2008-01-18 00:22:02 | 但丁 | 2
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) o8 `3 H( W% e. y& Z4 T  W* [點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:- h( K2 L6 @/ q" a. J
Filename: DSC01158.JPG
. _5 b3 w! Y  ?) y, U) j4 @Datetime | Downloaded by | Counts4 ^0 y' L5 o6 _7 d' e
2008-01-18 00:25:24 | 阿感 | 2
' j6 {# H% v' ?- r* t# ]. E2008-01-18 00:24:20 | playbr2 | 2
9 D+ ?: F- Z  i2008-01-18 00:22:02 | 但丁 | 28 [- w/ Q5 N% w/ r3 E3 c) p
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點解大家都down兩次? XD

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! X+ Z( K; s3 q; D我第一次開睇左2秒就close 左
# ~1 F' ^5 Y; O/ I之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
/ k7 l5 D" s  }Filename: DSC01158.JPG/ E$ s! t* b6 n  A, l' R) w
Datetime | Downloaded by | Counts1 u. d  |/ Q# X, s  \
2008-01-18 00:25:24 | 阿感 | 2" X8 K( g1 h3 ^  q- ?! ~% ]
2008-01-18 00:24:20 | playbr2 | 2# E" j" E$ z/ n3 v
2008-01-18 00:22:02 | 但丁 | 2* Q4 t4 }& E6 Y% @7 s2 ?6 z

. s8 _. l/ d" t$ ?# h點解大家都down兩次? XD

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; _. U; s# _+ H快d捉我錯處
/ h; d6 _* e7 l9 r0 M! ]& B* m話吾定我都打錯 + - 符號: z" g; g) A6 n" J* A  ]( d% M3 F5 h
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
5 X/ \) i; h+ g& H3 \9 w/ R/ V不過,c=101n哥度(解除n係正整數的限制,只是整數)
( }- l% r2 {" v( t: m7 w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~)
6 U7 A- @* e+ v  i8 @( d知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
" y% D1 `' ~/ N+ y* b但原先是不知答案,所以唔知有無失根( y2 s; h1 ^) ^: M+ e4 |+ z" h. w$ O' S
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有時見到題目都感到有點不爽, ]! Z9 i0 u* _' n
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
# b: v9 J* x5 z4 L# 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....
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3 R, q6 j! B; g' f/ b2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:  t& v+ u1 {8 {$ \7 l6 H
冇答案ga....
9 `0 {) x$ I7 ~" ]7 J9 S7 b$ |6 \; e0 p' u# P$ O& Y
2條equation solve 唔到3個unknown ga....

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* p$ d- {, M$ ?6 bagree
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8 q9 h2 ]" \' }% r1 t7 ?2 equations 2 unknows) b/ g( |; y/ m3 W

! x( I1 }+ W0 e$ Z) x6 H. B1 Aif 3 unknows there should be 3 equations
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7 Q' C# p( g/ ~# gmake it simple
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2 [+ @4 Q# V# |' K+ m8 J3 G5 {! vsay
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4 s% v5 x0 d5 |& t8 Ta + b +c = 3
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6 }$ ~1 g* {; y; }a+b = 2
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then c is 1 % ~/ ~) ?  h$ a. F7 }

" e8 Y8 u, B- N+ ?a = 2 - b 6 K1 k% v& Z2 ~2 g# o7 x2 U
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:; G! z# A) N* O3 ?, g
冇答案ga....
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' Y& R: N$ L- Q. e! H5 I% G4 b2條equation solve 唔到3個unknown ga....

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8 c! S3 V7 q! ~) X此言差矣~4 |6 K/ F. G. \- u5 K" S" I

  _1 M: c0 r3 [# X  S2條equation solve 唔到3個unknown ga* k. q  H" x+ K
還欠一個條件,就是3條equation都是linear independent(線性無關)的+ S+ D2 W; ^2 j- a/ f  k

: Q! E  W: t8 T8 T簡單點說,多元一次方程就是線性方程的一個例子9 g( S' b+ T4 v$ h
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! C6 f* @; j; Y7 H# n, w

: {/ C4 W3 J- J. C5 [. u5 P& }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~)1 M% K1 _" D4 `
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
5 p* v8 m7 B& f& a! U- C有興趣就解解看' j( |+ _+ X# T+ `5 w% P" x# u
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:8 d: _0 c: k# Y
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7 Z; Y( c& M7 T" r. 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:
2 P8 b8 F. J( w6 ]# H$ h捉錯處就唔敢當: W- X" A4 F7 Z
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3 M) u9 D  e! H  b+ [
反而適當地調節一下 , 咁會理性好多
  _$ ?4 J  N: O8 F就好似隻game 由12粒珠 加到13粒珠咁4 N5 E: k2 D7 i3 `- B3 ?% H; n
當''堂''好玩哂. m6 \; q; B5 M4 G* A4 d

9 Q# p: q0 D, Y( L0 r# Up.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...

, Y) m- s- V7 `# m/ _已是正寫吧