sakura310

Filename: DSC01158.JPG
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0 O' F" a1 V6 g: V* ?# M2008-01-18 00:25:24 | 阿感 | 2
- C$ b  m8 x8 c# P2008-01-18 00:24:20 | playbr2 | 22 G# U6 X4 B8 Y
2008-01-18 00:22:02 | 但丁 | 24 h. X4 A5 ]$ G; E) v6 W$ s

- e$ F5 G7 K3 N' W$ Y8 c1 _點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:  v" \% F! W8 F/ |  v/ o" x
Filename: DSC01158.JPG3 W4 \& J2 F- D9 _
Datetime | Downloaded by | Counts! U  B' b- y( F( L0 t
2008-01-18 00:25:24 | 阿感 | 2$ m# a7 H! B) v. |) M5 v" ^- m% u9 ]
2008-01-18 00:24:20 | playbr2 | 2
: n9 m6 |5 w6 X+ l8 x: D  V2008-01-18 00:22:02 | 但丁 | 2
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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: i" T3 x7 l, p, S
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:# w/ ^' b: |: j. s6 S$ _0 m( g+ t
Filename: DSC01158.JPG
. b! ^1 ?# e$ G; i2 M. t' BDatetime | Downloaded by | Counts# X0 P# d7 Y" q
2008-01-18 00:25:24 | 阿感 | 2
7 k% A8 L  e- J( Q. _/ N( s2008-01-18 00:24:20 | playbr2 | 25 }6 w9 {2 q, z9 T) T
2008-01-18 00:22:02 | 但丁 | 2
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6 F, N* W6 F6 W. o: Q: B點解大家都down兩次? XD

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快d捉我錯處
) [6 s" B6 {* O5 F1 }3 w話吾定我都打錯 + - 符號5 E2 s6 G& m8 Q  V& z
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
/ ?; s/ f2 o" j$ a( E! i4 A4 S不過,c=101n哥度(解除n係正整數的限制,只是整數)
$ ^# x. N5 I3 o9 s. J9 Q' e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~)* `  B* h3 U3 p6 t( Q/ W, M* q
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題# I) a' ?8 ]% d3 O5 {1 g0 M
但原先是不知答案,所以唔知有無失根, _( J  b! ~7 [
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有時見到題目都感到有點不爽
0 L, O& }- F: g! ]; F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" q6 R- U6 x5 t7 f' ~$ h( _- Q% f7 U
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..../ x2 c/ L& m0 i- Q

' h! i. {6 b+ t7 Y. ~$ K' C4 U- t! @2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:6 ?# I/ n7 M# c! B( T. [: U+ [
冇答案ga....' w6 ^' q/ _6 m* \+ ^+ c

. N8 g  @5 R( `" O! G+ h2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows* `8 ?3 y5 j4 U
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if 3 unknows there should be 3 equations
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make it simple 5 ?$ @, F, E( G! I# ~
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say
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a + b +c = 39 c: Z; r! a: }: p. y% y
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a+b = 2$ ^# R/ E7 D% x; Y! E
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then c is 1
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/ e+ x. x7 ]* Na = 2 - b
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so 0 = 0 ! \$ n1 m6 F" ^' e
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
; E, |# N4 e% @! ~; t冇答案ga....1 R: P, ]; _. h/ D& d2 K
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2條equation solve 唔到3個unknown ga....

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此言差矣~: M7 S8 u% B  e/ }7 w

3 L; E. s; N: A' p$ [+ d6 f2條equation solve 唔到3個unknown ga
7 D0 F! f% a; W0 r/ b還欠一個條件,就是3條equation都是linear independent(線性無關)的5 y" k5 q' J8 H0 [
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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
( T& |5 j6 r) i" Y5 \' G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: \: J0 T; U( R" R% d- V! @0 S
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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~)" K1 r) i+ L/ I5 @( {/ |: I. ]
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解- t" f9 W& U! ^
有興趣就解解看
: r% r" W9 A% q' ]2 C# N不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:" j$ H7 V0 ]2 t/ q, ]  @
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3 `7 ?1 D" K3 [7 _; x/ s! ]3 }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:% X! W2 G. N; @# X+ y# {
捉錯處就唔敢當5 o0 c2 J( q9 Z" T8 D- v
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
; F4 O$ N" S7 o, \/ p反而適當地調節一下 , 咁會理性好多
0 G% {! {( L- @. m) g% t就好似隻game 由12粒珠 加到13粒珠咁; F4 {# I- c  ]! k
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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p.s. 求''堂''字正寫...

" Q, q* e; K+ E' k已是正寫吧