sakura310

Filename: DSC01158.JPG, D8 ]: f& k# w- w$ g
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2008-01-18 00:25:24 | 阿感 | 2" }& |0 W7 J. L% P% f/ ~' H  P
2008-01-18 00:24:20 | playbr2 | 2/ z* L; P, {. ^; u
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( ^8 d9 M+ k3 Y9 y
Filename: DSC01158.JPG/ @. r/ p' W5 c2 _3 v* [! N
Datetime | Downloaded by | Counts
2 T) n5 U  o* Q2008-01-18 00:25:24 | 阿感 | 2* N/ g2 n, I) M! M0 U; Q
2008-01-18 00:24:20 | playbr2 | 23 Y5 |5 d+ x/ \4 e5 `
2008-01-18 00:22:02 | 但丁 | 2; _) b+ j( U9 t, w: O
# k2 O; P1 U, a
點解大家都down兩次? XD

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, a- T8 T8 K+ `1 |5 S6 I# K我第一次開睇左2秒就close 左8 v+ U7 Z' l! X" _
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:1 {) N8 @! B8 Y* i( Q4 F9 w
Filename: DSC01158.JPG/ |' ~: G7 x8 R5 }
Datetime | Downloaded by | Counts' x- r- T" v0 h& [! D
2008-01-18 00:25:24 | 阿感 | 2
$ M" J) X  z) L- _& M2008-01-18 00:24:20 | playbr2 | 2
" _( Q' G+ n, m4 c- f& g) S2008-01-18 00:22:02 | 但丁 | 2
" [3 Y6 N, u0 V; q+ v; m) m* L0 ]$ U7 r" Z& {+ l
點解大家都down兩次? XD

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快d捉我錯處4 ?" E- U9 g# g9 g0 a' r( n
話吾定我都打錯 + - 符號5 R6 ], d( f, N0 w  Q( M
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當9 z4 a+ o5 g. h$ o' U& Q) E+ E
不過,c=101n哥度(解除n係正整數的限制,只是整數)8 J$ g! ~! y& A1 T* Y" G) G* d" 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~)3 m+ j) U2 D0 |7 \
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
# X1 W; @: \$ E$ w$ u但原先是不知答案,所以唔知有無失根& F8 o5 b  @. A) ^( S

7 W6 ?6 J0 m& H1 S! y4 ^! n5 G! C# G/ m- ?2 V有時見到題目都感到有點不爽
4 u! {3 o* \' B5 @" W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
, Q; h0 o# S' _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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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:% s8 _3 L/ B9 J1 j
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree * E5 b( k7 j4 K6 R! N* A. Z

" f5 `0 P. g/ a5 ~: ~/ ]; ^6 M2 equations 2 unknows7 p3 l4 i3 b* N

& e0 }$ q) d+ N6 t! Aif 3 unknows there should be 3 equations & Z9 }8 r6 ?5 ^) h/ ]# @

# }  S2 J! A' k" q9 e$ Cmake it simple & e# q$ \$ D: d' o

8 h) D& |  }3 y/ |say
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6 J/ y8 h: S* G- k* m3 J8 e# Qa + b +c = 3( K9 g3 M" O& k

2 j% Y; |7 ~7 Ia+b = 2
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then c is 1
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a = 2 - b
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9 b6 g' L. Q1 c* q' xso 0 = 0 : C0 X- W7 ?( b; D! ?- |

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
# [# _9 B( y. I! Y, f冇答案ga....
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2條equation solve 唔到3個unknown ga....

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此言差矣~) ~# z* P0 B$ v! k
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2條equation solve 唔到3個unknown ga9 i* K% e  c% W* f
還欠一個條件,就是3條equation都是linear independent(線性無關)的. Q/ u0 {6 T- R( K6 l+ s3 m8 R3 |
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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
0 O4 \  r& b# E1 m; N+ x# w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$ e! Y0 i8 x: _8 Q0 h! t

* S3 c1 S- E3 Z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~)) s1 v: v: @2 T
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
+ u5 L: S$ i, J* n" l7 `8 [有興趣就解解看' l; l5 b0 g' s$ K0 T$ `' {6 N
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:) J: j, w" x" S( ]  h
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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:! g& q7 y0 [' @: o/ O
捉錯處就唔敢當1 d. _" M; g* o& k5 H* j) o8 a4 Z
不過,c=101n哥度(解...

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2 r8 U1 M6 K' T7 E1 l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$ G' o! O, `+ C& B4 A/ |* i  {4 b4 u
反而適當地調節一下 , 咁會理性好多
$ E. {' N% ^1 H: A1 ?+ `# j' `' p: J就好似隻game 由12粒珠 加到13粒珠咁
. o# v# n0 o: l) q當''堂''好玩哂
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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/ w( a2 n% I! jp.s. 求''堂''字正寫...

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已是正寫吧