sakura310

Filename: DSC01158.JPG
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" |1 l; v( Q7 [$ B2008-01-18 00:25:24 | 阿感 | 2
' P/ Z( P3 x7 U7 z! s) y6 J2008-01-18 00:24:20 | playbr2 | 2& `+ R! a( L# o8 y, T
2008-01-18 00:22:02 | 但丁 | 2) t& K) w% V' C4 Y
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:  f5 b  ?# p; ~  i9 P! Q- z- y
Filename: DSC01158.JPG
. f% d" m/ g' cDatetime | Downloaded by | Counts7 U( `2 a* R9 T2 P! L# c) U
2008-01-18 00:25:24 | 阿感 | 2
/ x. {1 I+ X2 V' n8 A* `% A3 S2008-01-18 00:24:20 | playbr2 | 21 H- K5 N/ O% s5 Z3 n
2008-01-18 00:22:02 | 但丁 | 2
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- F4 q8 O5 F" R- o9 W( n3 P1 B點解大家都down兩次? XD

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( g! l& h: x; @我第一次開睇左2秒就close 左
& k1 x' `3 x' N! j$ G% ?2 O% s9 I8 }: d之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
/ \" @7 W; t% }8 I9 L7 O% Z9 l+ mFilename: DSC01158.JPG
: s* W3 U; g3 I: B6 |4 |Datetime | Downloaded by | Counts
' p, M# H" L- S# F6 ^# v; A6 \2008-01-18 00:25:24 | 阿感 | 2) ^) m& h9 k1 ]2 Y2 N) H
2008-01-18 00:24:20 | playbr2 | 2. r: Z8 R6 b, k2 O% y
2008-01-18 00:22:02 | 但丁 | 22 z3 V; K6 C5 a- p( f

) J/ s. `. A- D0 J9 G3 G; L0 V點解大家都down兩次? XD

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( [# f( X7 v+ \2 e8 v快d捉我錯處* J$ e6 W2 v$ ]: F0 p+ H- {
話吾定我都打錯 + - 符號
5 L6 V+ y2 P5 y; \" t6 H6 l係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當1 a2 d6 }* x6 d% X
不過,c=101n哥度(解除n係正整數的限制,只是整數)9 F( ]' C- u" O# K$ s/ v0 O" i$ n9 R
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~)
9 I6 d3 \& c3 W$ J9 `- e% n知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
6 j+ c# p$ w2 v0 T2 [8 Z: h6 m. j/ z但原先是不知答案,所以唔知有無失根$ X( v" I, I+ S/ q: A' v$ Z% @& m
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有時見到題目都感到有點不爽$ M# Z2 X" d  J) [, g3 Z
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2 e. _. J% k; n4 g
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....7 o* L6 y* j9 }8 k+ _) I

& {. `: v5 a. I1 q+ x3 {2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:$ ?+ G* h% D6 p  K3 t7 c( s& w
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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. P  d  _* N- A) u: c! |agree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations 7 [3 v' l7 R% u7 a

3 P  _& }# t# Y  e! `: Gmake it simple
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say 8 E) Z6 D" t0 V( C* L5 Z% V
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a + b +c = 3; U, Y" B- r/ i5 [3 p8 i. B
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a+b = 2! h& C8 D) `2 I3 c/ G* ~# Z

0 \8 Q$ o* c; f% A4 dthen c is 1
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a = 2 - b
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so 0 = 0 5 M* |* ^( {/ w! r6 Y5 Q) T0 i
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
  ]- K" u& z9 a+ H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~
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1 h  m2 F3 C- n  I# i2條equation solve 唔到3個unknown ga
, Y+ E7 R0 Y+ P4 {* @還欠一個條件,就是3條equation都是linear independent(線性無關)的
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- B' y# P$ o( X: n; B8 Z0 t簡單點說,多元一次方程就是線性方程的一個例子
# D( x0 D/ J( _* p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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0 u% m+ j; j/ k3 O' p7 J9 g2 {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~), H, g) Y" m# W! a' \
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
* I, X1 Z9 N9 n% p- k) _有興趣就解解看
# N  M) u" k: G# P- d0 x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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9 ]$ @0 L+ Y0 K! l8 l2 K, n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:9 E! W- e' p( W5 ], g3 f
捉錯處就唔敢當
; T) f+ R  |" D: s* A- E: s8 V* s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1 C( }$ I+ r4 d: B
反而適當地調節一下 , 咁會理性好多$ g$ q- X/ f& r6 b7 m
就好似隻game 由12粒珠 加到13粒珠咁
2 L5 M/ C/ z/ k8 t. ^4 X+ R& D  d當''堂''好玩哂# U$ t: }( a/ i& O' z
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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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p.s. 求''堂''字正寫...

4 [2 K( m) c/ `% q+ ~; }- F9 h已是正寫吧