sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 23 F, C/ d" _5 t4 F. H2 S
2008-01-18 00:24:20 | playbr2 | 2
" t9 A$ O3 c6 a" h6 c2008-01-18 00:22:02 | 但丁 | 2
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* q% A9 Q" [9 W4 N) Y: q0 z點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:7 e1 j, o+ k# F. T3 @$ E
Filename: DSC01158.JPG* N' i! k) n& O5 a5 t. ]
Datetime | Downloaded by | Counts
2 n2 W+ x9 A, C% w+ a2008-01-18 00:25:24 | 阿感 | 2
. K; n* @% L" I' d8 u; \2008-01-18 00:24:20 | playbr2 | 2
; P% B: Z1 j* W4 L3 |& g$ v2008-01-18 00:22:02 | 但丁 | 2
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: h0 I! R* k8 K點解大家都down兩次? XD

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) Y4 U; L1 A0 i9 f0 S0 U0 X) g我第一次開睇左2秒就close 左
4 Q  N2 I! m. B) f3 T之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:& A- l  M3 c% g/ w7 k) k, B$ |. r
Filename: DSC01158.JPG4 M2 A7 `( Z1 t7 m/ I2 Y; k
Datetime | Downloaded by | Counts
& ], g* w0 ~& m/ A2008-01-18 00:25:24 | 阿感 | 2
/ ~8 P4 j& U8 t' L: {8 g2008-01-18 00:24:20 | playbr2 | 2& z. o7 Q8 o, o( i- b! J
2008-01-18 00:22:02 | 但丁 | 2
, X8 Q- \8 F/ o1 ^3 ]/ ^+ E
4 y8 q7 x9 y' Q4 S# B點解大家都down兩次? XD

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4 v) _7 ^2 g% R9 _+ _# |2 K1 K快d捉我錯處
; r! X' y! D, e  S話吾定我都打錯 + - 符號! x  _; y0 x1 q: A0 Q
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當( W+ d$ b* Y, t, N) j6 f3 S
不過,c=101n哥度(解除n係正整數的限制,只是整數)
# O3 q' r8 j( m8 a, A! 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 S) j% u$ ?- Q; X* Q) e
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
. U' ]- w( n6 S, p) M0 \0 V但原先是不知答案,所以唔知有無失根8 ]' F) S: w% A% Y2 v6 z+ C

( T- R4 E8 r; z' u有時見到題目都感到有點不爽" S% \6 _7 H  q" ]
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
, a4 [" J& g, ]8 g' p: b! p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...." b# A. I# U$ c5 q
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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:& K% F  J* e- M9 O# E  [
冇答案ga....
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( v$ z8 ?# e+ U0 |2條equation solve 唔到3個unknown ga....

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! g2 O& E. |9 {0 f/ Cagree   ]4 C4 [; E" E) b8 U

3 M# [6 ?5 r0 g1 Z& F2 equations 2 unknows
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" Q7 V5 M" ?  j4 \% f( [if 3 unknows there should be 3 equations " k' r" ?# p$ g
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make it simple
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4 t7 g; L+ P) @1 F& Csay
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a + b +c = 3
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  V3 `7 c/ l) g* \a+b = 2" S* N% w( x# Z- D# ]% ~! A- M; g, }
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then c is 1 3 P+ l8 c  i5 H
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a = 2 - b
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so 0 = 0 4 k. ]! P9 p9 v$ c' t6 o
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
8 J$ A! H# y3 x( ?/ Y冇答案ga....
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5 Y# J' z3 F8 o) ]; }3 W2條equation solve 唔到3個unknown ga....

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: T4 N9 }  Z9 P" ~! Q: n此言差矣~$ z$ b: }! F' o- G' ^! n; Q" o3 _

. t8 ?0 r  K- {) \3 M  s% T2條equation solve 唔到3個unknown ga
6 f# u# k4 u: c3 v還欠一個條件,就是3條equation都是linear independent(線性無關)的. S  B1 v" m' ?, y* s( b* C1 D

7 f5 G1 s; r9 P9 c5 v/ S簡單點說,多元一次方程就是線性方程的一個例子
# L5 }' {. p* A+ c* F% l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4 z+ a6 d# _/ X  L

7 ^0 a2 e8 L+ O; O- m% ]+ H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~)9 s; `( C5 _: {& O7 P
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解$ N' ^, ~$ c" d' L
有興趣就解解看
" O2 W6 f  w1 ?0 A6 T7 t不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:) Y/ p) k* C/ P* O$ {  x2 K/ ^5 Y. [; g5 p

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& P/ @5 R2 ?* ~$ y. {4 G" e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:
* J% l9 k! ?  W+ M捉錯處就唔敢當
& d6 G0 @* o8 y4 |  k7 B9 L不過,c=101n哥度(解...

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! T9 w! ?0 W: b2 V; D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* X) ^) L0 q. e" B! J: g
反而適當地調節一下 , 咁會理性好多
% a6 b) g- w6 P% T2 Z0 O! C就好似隻game 由12粒珠 加到13粒珠咁5 y  J# d2 O9 ^6 k
當''堂''好玩哂/ O) u: Z- m/ G) y; c/ [
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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...

- n1 D5 b* f" x; V0 I" D3 r已是正寫吧