sakura310

Filename: DSC01158.JPG* i. k3 q2 C4 |8 s$ u# }% k
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* ]. D' G( \7 t5 e2008-01-18 00:25:24 | 阿感 | 2& e) t+ T' w& U7 Z: u( w" A" m
2008-01-18 00:24:20 | playbr2 | 2
9 ?- v- _2 r  O$ d: p9 v8 R. n9 M: r2008-01-18 00:22:02 | 但丁 | 2
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2 o3 d1 f! P7 ?3 B* Q點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
7 a* L6 A( {; T7 d9 zFilename: DSC01158.JPG9 p* D0 E. @( P% U
Datetime | Downloaded by | Counts
( z5 }. d! S/ P) c. L, r; U  n2008-01-18 00:25:24 | 阿感 | 2
7 s& R' p  G, P8 F, o5 Z% I2008-01-18 00:24:20 | playbr2 | 2, Y+ J* ?8 p+ e, |% D! Z
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

& C% f" ^) I, ?

/ W" {# @8 b/ F7 G/ R# H# t我第一次開睇左2秒就close 左
$ {1 h3 G3 R  I9 C1 y# ]9 Y之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:7 _9 ^, c/ d) s' k* q$ P
Filename: DSC01158.JPG( t* s$ g* Q+ K5 w7 Q3 n! z3 l
Datetime | Downloaded by | Counts" c8 p3 S. a0 P* j* _
2008-01-18 00:25:24 | 阿感 | 23 w8 U0 }- [5 n9 O5 X/ h
2008-01-18 00:24:20 | playbr2 | 2
" i9 g6 B8 D$ B. i4 P- M8 w2008-01-18 00:22:02 | 但丁 | 27 i+ x% g1 u4 V  R

+ [" ^- E1 Y8 ?- X" u* G點解大家都down兩次? XD

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快d捉我錯處
+ u3 ?8 x6 T2 Y; u' T# ?1 D話吾定我都打錯 + - 符號
7 {& k8 S( K) L( ^( T0 h2 G5 q係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
" N$ w( X  @' I' e9 I不過,c=101n哥度(解除n係正整數的限制,只是整數)+ F. k- {# R# n4 q+ b
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~)
! c. `+ V2 t  Z, b知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題* _- |# c3 l' x. t
但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽. a! ]% _' y+ j; j
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7 ~9 K( v6 \  \
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....
+ X+ Q) ~& r4 D( Q( A; o& x- ^3 g2 d
' E' t. a2 Y: }) V) j$ c) p2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:2 D+ H! V& u0 o/ p* `! g
冇答案ga....) a1 H4 r5 q. Z! a2 a4 L  j
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2條equation solve 唔到3個unknown ga....

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agree + l2 `" o8 f* y; m8 V

& d& |7 y- H+ ^# O2 equations 2 unknows
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7 [! ^8 ]: P# Jif 3 unknows there should be 3 equations ( M5 {+ x; @% _/ n

: r& M! h! U4 amake it simple . b4 T6 x' G- {* j& @
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say $ n. E6 O+ f1 H. Q* K% @& w

5 G; ~9 i9 a" n) E  qa + b +c = 3
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a+b = 2/ P  |2 W& `6 s" x* }5 v
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then c is 1 , ~: A& P: L7 v. A& t2 ]3 P7 x

+ w% o$ o4 v! d1 ha = 2 - b 2 C! T9 b4 H" `; A/ l
; Z0 c; p* |; r+ [
so 0 = 0
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8 {- o( F2 r) t. @' N- V2 ~+ ~

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
; ^2 p6 j4 ?- K5 s% W( g0 g冇答案ga....
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- l1 V" \8 D: F2條equation solve 唔到3個unknown ga....

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此言差矣~: \5 [* n  R0 `( E

4 Z5 T7 f! I1 a9 v9 O2條equation solve 唔到3個unknown ga3 P4 S. @1 h4 z# c; ~
還欠一個條件,就是3條equation都是linear independent(線性無關)的! P  D- m. b% H& ]
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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
: z* H; l" P# ~+ j# i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6 Q8 Z& ^) l7 G+ C: `8 A0 s

" i& T; k/ z9 w( Z# b0 h! l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~)
8 Q5 U7 ]3 e$ z1 H例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解1 A6 I) T0 [2 T# q2 u/ L+ c) {
有興趣就解解看: s( w. C7 z' f
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:0 S" q$ A* |$ F4 Y

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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:. a" \% ~4 `! Z+ c: e' }
捉錯處就唔敢當
& n  y0 N  @/ V! e% F  U. m) L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+ c; C+ O- v& ]; ]
反而適當地調節一下 , 咁會理性好多9 l* H- ~" t  G, K/ e
就好似隻game 由12粒珠 加到13粒珠咁
8 x8 W  K5 q+ a* O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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* J( u! i6 _0 Y7 f% ?p.s. 求''堂''字正寫...

5 t$ U# ^7 D% u( _' n/ _8 Q已是正寫吧