sakura310

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2008-01-18 00:25:24 | 阿感 | 2
9 u6 c/ ~& ?& @" t3 [2008-01-18 00:24:20 | playbr2 | 2
/ B+ e: D& E9 b) O+ \2008-01-18 00:22:02 | 但丁 | 2
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% D$ p' p9 f) k' y點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
6 I6 m* ~5 v' J& TFilename: DSC01158.JPG8 S; A# D; |  b) y
Datetime | Downloaded by | Counts
! {4 G% y1 q  t; z0 Q* P2008-01-18 00:25:24 | 阿感 | 2
: H2 K6 F( G4 j; E2008-01-18 00:24:20 | playbr2 | 2
& R, w2 k7 r; Q0 M9 ^2008-01-18 00:22:02 | 但丁 | 2$ N1 q) J3 ~! i- \  a% A
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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, U  R6 S' K6 d1 M: w* e8 T
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
5 ]. h- B+ U4 S& I3 ~0 H% AFilename: DSC01158.JPG7 Q( S& |8 _9 _0 B
Datetime | Downloaded by | Counts. i6 X5 ^6 X" @8 u
2008-01-18 00:25:24 | 阿感 | 2
2 N7 U# M2 G. E  z2008-01-18 00:24:20 | playbr2 | 20 S. i6 Y" V  B/ Y8 H. H! w/ U7 F
2008-01-18 00:22:02 | 但丁 | 2
- u, }0 m7 W3 p2 w$ ?4 y0 ], N- p, e* o: t* N. ~# X
點解大家都down兩次? XD

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% H$ {5 P& s8 b7 b$ C1 k" P快d捉我錯處5 O( J* z: P+ g- R" w
話吾定我都打錯 + - 符號8 O% v3 R0 h/ K  P* f
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
+ Y9 f: g7 W3 r3 ^. S3 K不過,c=101n哥度(解除n係正整數的限制,只是整數)
, e+ R+ G4 c! o5 L7 c) p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% Y3 U& ?4 M% S( O1 b知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
$ A3 u' V: `, [* Q9 m但原先是不知答案,所以唔知有無失根
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( q6 H7 O! l& L有時見到題目都感到有點不爽
* B/ U! S! O+ c9 x/ V6 ~; B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
4 p- u! }# o3 t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:
. H7 }1 F) y3 J$ z6 u冇答案ga....7 @3 B% }& B  f# \

0 d- d, Q, z1 W2條equation solve 唔到3個unknown ga....

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7 q1 W4 K3 Q5 Y) N7 |" bagree * \+ v/ J4 q* C, T* i* L! V; F( H
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2 equations 2 unknows
3 m; g# v/ d  ?- s8 F- {( e0 X$ }8 n$ W5 A/ P
if 3 unknows there should be 3 equations
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; Z) A5 K  D1 Omake it simple ) x' z1 m, S1 X  T/ [3 s, A
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say
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a + b +c = 3
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% O) {  j. C. G1 x& ba+b = 2
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then c is 1 0 y  ~2 b; D5 [0 v3 V9 I6 p( b

; c8 e& g! |$ [5 A* f* `3 ?! c1 Ma = 2 - b
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; P; b8 }# S3 i+ d) L7 _  ?- cso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
1 Y0 I. r/ {: F. V7 U, n冇答案ga....4 j  Q+ P; _, L1 n2 m" X' a3 \- ?$ x
5 |% t% F- E" r7 |8 ~( }4 i) O
2條equation solve 唔到3個unknown ga....

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4 e. R- I% U% w- _: v5 w此言差矣~( ?$ }1 P9 g" p
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2條equation solve 唔到3個unknown ga
$ S' v0 A7 \/ d還欠一個條件,就是3條equation都是linear independent(線性無關)的
2 L1 R/ f6 Q: A( z9 @0 G* w' b& j) u& e5 t# V/ p* y9 h) v
簡單點說,多元一次方程就是線性方程的一個例子- e; G; }; @1 L( o
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* f6 Y# i0 ^) ^! B
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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~)
4 s/ O! I% K0 w4 x$ E8 q- V例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 x: Y9 I5 }) E3 T( P/ Z( s0 e% L+ c有興趣就解解看; V/ z: K1 b+ U( N
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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3 T  c8 U$ b/ J0 X" _. z6 x, r, S+ E* T4 Q
: L! S0 V% l  p  w( Y7 @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:8 H" |$ l" ?1 c5 g( i3 k* p9 T: K. l9 H
捉錯處就唔敢當" U1 _3 C9 m9 M, u) ^
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# `2 N2 G; I0 b$ B0 p! d
反而適當地調節一下 , 咁會理性好多2 @; |; B  H# n5 f, E" ~0 P
就好似隻game 由12粒珠 加到13粒珠咁* A" @7 F. }8 Y: |  J2 Q# k
當''堂''好玩哂4 O% R* _1 e, A3 I
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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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  J7 m4 A* y4 T6 X5 o+ V4 j+ O: Yp.s. 求''堂''字正寫...

) r' S9 a+ N/ t/ {4 H已是正寫吧