sakura310

Filename: DSC01158.JPG% q, ?4 t& M' o0 O% `
Datetime | Downloaded by | Counts7 P2 x5 a4 ^% O2 _$ h( p
2008-01-18 00:25:24 | 阿感 | 2
3 x+ q) `8 `/ _0 J2008-01-18 00:24:20 | playbr2 | 2
4 @, G9 P- T8 G2008-01-18 00:22:02 | 但丁 | 21 M9 @6 v- c# B0 k! Q

3 S4 I6 z) y. e$ h- [" R; @$ J  |點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
1 t! X! q+ Z) e* T" e& d, TFilename: DSC01158.JPG; m0 B# B2 W9 N0 C
Datetime | Downloaded by | Counts& W0 i! \8 x5 S8 x% R( O/ d9 A
2008-01-18 00:25:24 | 阿感 | 2
2 L. t( u+ U/ m: }2008-01-18 00:24:20 | playbr2 | 2. r" \: ^0 e- k
2008-01-18 00:22:02 | 但丁 | 2
! z$ f, S; ?3 q% n; M8 P. U
6 A5 N3 u# P0 I點解大家都down兩次? XD

2 A( ^' y$ j. I

. A- Q$ n. d* s! S% S我第一次開睇左2秒就close 左
/ v; k+ {& q; \4 D7 H9 s  o7 u/ C之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* x' [$ g0 n, _$ J6 C/ ?2 @Filename: DSC01158.JPG
7 v. v1 \" A' a0 UDatetime | Downloaded by | Counts
- E6 x3 R" E9 j' L5 u2008-01-18 00:25:24 | 阿感 | 25 _: G  z+ C0 l$ S2 ^
2008-01-18 00:24:20 | playbr2 | 2' ?, T" `9 x- F3 p+ Y; D
2008-01-18 00:22:02 | 但丁 | 2
$ c5 B. y% S; w! q: z) a
* X+ E' @, k5 v1 s" M點解大家都down兩次? XD

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8 r' x' \9 y% l$ t! E9 c
快d捉我錯處/ ~8 w2 _6 L8 j+ e
話吾定我都打錯 + - 符號
$ G  p) H+ I/ Y4 [係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
, ~! u3 {! f6 k% u8 Y不過,c=101n哥度(解除n係正整數的限制,只是整數)
1 z5 N7 K8 a' O! a) _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~)
& M' x4 X7 h+ F& s+ P3 X+ A知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
' |. ^' r2 @6 W  s9 |3 m6 T7 {但原先是不知答案,所以唔知有無失根
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4 V; `2 O- K: B0 K& D( L有時見到題目都感到有點不爽4 n/ W  d) \' _/ c
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& D' e  w5 t; W) j. T' N( M+ F
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....; |3 y3 K' j/ X2 I

& r( x% G/ }6 \) ^' q* p2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
! U7 N% G$ H# D  ]冇答案ga....
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3 b2 F1 Y$ k3 v$ ^+ o2條equation solve 唔到3個unknown ga....

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" l) |/ e+ J* B# Z4 L$ G4 z& ~agree ; m" r& D* j  i1 r

" E8 L3 ~" [/ }6 h( U! t2 equations 2 unknows
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9 x. v; }! t' K- {% @if 3 unknows there should be 3 equations
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7 s2 K5 `; J/ Q1 g. n5 e) Z$ Qmake it simple * e6 e( v2 X0 O* Z4 f4 C! P
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say
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$ j7 G% [* W2 A) L/ ga + b +c = 3
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a+b = 2) c0 G/ \( B$ X7 b" ^: ]; @1 ^9 r

) I: \  Y9 J3 athen c is 1 & n  r  z& Z6 O* x- \8 M; i

" H; d( `- c. x- Aa = 2 - b
* T5 M$ B- r3 j* k8 m  v; W5 [& S5 Q: I7 [
so 0 = 0 9 \+ _" s" M% E

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:4 X) D" H0 D3 [8 |/ Z7 i4 D
冇答案ga....
( F4 J) ^4 p& v" J+ T9 B
; N9 _: [2 _* ~, w( ]; m2條equation solve 唔到3個unknown ga....

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4 z5 ^# u3 y- a5 X) |2 ^此言差矣~
  F5 k$ q! _+ z" A% u  u/ A0 R+ H3 N' x+ y" }# M! U* f  [
2條equation solve 唔到3個unknown ga/ X9 [, a- d& Z+ `
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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: D9 ^* m# {" t% i1 ?簡單點說,多元一次方程就是線性方程的一個例子2 Z: L/ y0 e+ {  d
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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# X$ N& s# t4 ^3 F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~)
- W0 l; d, [+ E5 h0 O$ V例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解7 `8 V. u( s! c: c: g* ]
有興趣就解解看
: _& ]2 N' ~! y: S+ _5 o7 A不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
: U  M* G, m4 \7 @* o; Q* o7 |# U6 N  y& [+ ~7 l' \; L0 `3 D

: Y: K. o6 I1 C7 u8 G' U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:
# e# l$ M, Y, J" O! L捉錯處就唔敢當% V, x: ]" M, q9 h  L0 @- T! t% ~
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
' l/ e/ N  d- T/ o8 Q反而適當地調節一下 , 咁會理性好多
& Z. K% |# C/ G, C6 F就好似隻game 由12粒珠 加到13粒珠咁  \. P  D. y( A$ x9 T
當''堂''好玩哂
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9 W) J' C/ w! d( P' gp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:; K. o6 _" [7 }2 P: a! G6 U
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* L% Q* x5 t, O, k1 [" hp.s. 求''堂''字正寫...

9 F: u' u. z! |2 L已是正寫吧