sakura310

Filename: DSC01158.JPG4 C7 R2 }1 S6 @1 A% E. X( i! L
Datetime | Downloaded by | Counts
( M' k( h9 Z5 `2 B: B7 Q+ ]) m2008-01-18 00:25:24 | 阿感 | 2: c8 y6 ?1 R0 K4 }+ R+ Y9 m
2008-01-18 00:24:20 | playbr2 | 2" r6 k. g$ |. U; ^
2008-01-18 00:22:02 | 但丁 | 2
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4 t3 C) c% [$ j; h4 n點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:8 u& y$ i# y" b6 }6 c7 w/ P
Filename: DSC01158.JPG
; v/ I; Z4 V: X  hDatetime | Downloaded by | Counts
7 w  H2 d' R2 V. `! U2008-01-18 00:25:24 | 阿感 | 2# K: t3 ?/ E5 ^6 A
2008-01-18 00:24:20 | playbr2 | 2
; W$ o* b. n3 C2008-01-18 00:22:02 | 但丁 | 2  x2 ]9 r( o) {* x6 R0 o

6 d. A( ]) y, N! u" c; k+ k: T' U點解大家都down兩次? XD

6 i+ g7 d! W" V; i! S. P5 K/ F5 Q; Y9 e, P$ h. Z
我第一次開睇左2秒就close 左4 ]  t6 M9 L+ O5 x
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:% p( z5 [- u' [5 ?
Filename: DSC01158.JPG
6 U; c1 O9 M6 G% {& @1 MDatetime | Downloaded by | Counts
" P4 j! Z. B! M9 W9 g2008-01-18 00:25:24 | 阿感 | 2
" m, O2 f% k1 w* y8 J2008-01-18 00:24:20 | playbr2 | 27 I/ s& |& r+ m9 D& N: b1 z
2008-01-18 00:22:02 | 但丁 | 2, m5 F* b2 A: a$ ?4 x) V
1 w1 z/ m) m% k' m
點解大家都down兩次? XD

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快d捉我錯處7 e# k& `' y2 O
話吾定我都打錯 + - 符號# E7 Z  H' s1 `' w) g/ a
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 \2 J" t/ F3 z# D) m: k& [不過,c=101n哥度(解除n係正整數的限制,只是整數)
+ n9 b' }5 O0 r3 `3 {/ k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~)( Q" h" ?  E1 r6 C# X
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題( P" S8 T: p! U2 {1 {- ^/ O* w
但原先是不知答案,所以唔知有無失根# w! N; _6 `# Y9 b" z
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有時見到題目都感到有點不爽! S' b: o5 P5 S8 h9 u
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/ k8 l" V1 r# l
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....( o2 R; l3 v' G
& _) \. }; r8 _" n" [* Z
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
, i" H0 J, f. y9 A% K' v+ _0 v( l. v冇答案ga....
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" r9 Z4 i# R& p2條equation solve 唔到3個unknown ga....

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agree ' q& _: k# b+ j- Y- q: z1 [" c

. i4 f( r6 g( M' Y" p2 equations 2 unknows2 z% w" n! T' o6 X
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if 3 unknows there should be 3 equations
6 t0 @. b$ N7 Z0 ~" N0 J+ G
8 a% Q! F- |% _% E( emake it simple
: T8 {1 N' d5 L1 k+ {  Q1 E+ y( o/ G
say . q% M+ j9 g# w! m
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a + b +c = 3
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a+b = 2
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then c is 1 ' a0 A3 W" s% L4 n0 \5 ~

; O: Q. j# p% s* k/ Ja = 2 - b - J& ]2 }+ q- }2 }" B

( q/ [  {2 _; J& `0 D( Nso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
" h- g& T: p1 D, V# V+ K" K冇答案ga....
6 j6 ^( q" H/ P& }) ~0 m% T% b
2條equation solve 唔到3個unknown ga....

; {% U* c8 j0 w- {+ I4 A( c

9 y$ ^) x7 }/ ]7 w) w此言差矣~9 M+ u3 _+ f1 @7 X

# }% j+ f9 o& |9 r0 K% A2條equation solve 唔到3個unknown ga! Q  n" L" C1 U& U% H0 R  O2 C
還欠一個條件,就是3條equation都是linear independent(線性無關)的+ w! {  n5 |; m4 i- S
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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
$ ^9 \: X# v( Y$ d; @$ 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
. C# ]' a  l  t4 d
# Z: g/ a# Y, {/ h5 s0 F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~)
. N3 w, |& ~4 e2 U! B% u例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解+ ^, l3 l0 Z' d) v
有興趣就解解看
6 i7 A8 ^; n( H" ]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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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 z9 C1 d+ j8 ?" y9 u
捉錯處就唔敢當
2 }- S' ^, q$ t8 i" [& R/ k不過,c=101n哥度(解...

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, F: i/ l  u* ~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6 s/ I' }; |) d- n/ d# M. F# ?
反而適當地調節一下 , 咁會理性好多. J+ @5 m+ F2 t# k) _1 R
就好似隻game 由12粒珠 加到13粒珠咁' J; k' i* _' g1 ^9 M2 h
當''堂''好玩哂% I7 d5 @# r# j* C: S
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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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# _( M+ _8 r) H3 B; G4 w& F4 t1 e7 ]0 U3 w7 l1 ~( ^& ^! V. i4 F  n! X4 C
p.s. 求''堂''字正寫...

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已是正寫吧