sakura310

Filename: DSC01158.JPG7 J$ h, h8 w1 Q& x$ n! g' v7 ^3 B% [
Datetime | Downloaded by | Counts, ]/ b* X1 H& k# l4 n, s0 Y
2008-01-18 00:25:24 | 阿感 | 2
3 ?) O7 r: |" p$ i5 `7 ^* l" C' r2008-01-18 00:24:20 | playbr2 | 2
7 i6 V( X4 B! s2 A2008-01-18 00:22:02 | 但丁 | 2% i) v% q! x& m, s9 D" `- U
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
# f( c8 U2 p2 ~* Z! FFilename: DSC01158.JPG
# Y4 W6 y, f: W8 o* E) KDatetime | Downloaded by | Counts5 _8 a$ E$ i  ]# J+ w
2008-01-18 00:25:24 | 阿感 | 2
1 u% j" `' l4 S# I% w2008-01-18 00:24:20 | playbr2 | 2$ l& k6 \# z+ R6 V
2008-01-18 00:22:02 | 但丁 | 2
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' Q, K* l& G8 k  b0 o, v; c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6 _3 a1 V% x4 M4 O( g/ W
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
! R, A& A7 L/ ^; _Filename: DSC01158.JPG
6 v& b; K7 C  M- \- j: [; wDatetime | Downloaded by | Counts
8 s" `# q2 V4 C9 q: }, `; k2008-01-18 00:25:24 | 阿感 | 2$ [. A9 u2 ~: l; j- P
2008-01-18 00:24:20 | playbr2 | 2; ?/ W  {" n- d; K
2008-01-18 00:22:02 | 但丁 | 2" o+ t2 I& F4 z: K& T) s: m

7 B- ?& Q# w+ U, Q點解大家都down兩次? XD

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快d捉我錯處
* t! F4 z6 ?6 G' q話吾定我都打錯 + - 符號2 L+ \& v# s& ?/ b6 {
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
5 g/ X7 _* s; U不過,c=101n哥度(解除n係正整數的限制,只是整數)
, I# \% Q! U- m  b5 s" i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~)
4 o9 \# j* p4 g0 H: I) ]" b' W知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題' z$ \" Y, v' X5 B" B5 h
但原先是不知答案,所以唔知有無失根! S8 Q& K8 U$ I6 S0 h

+ _. \7 ?* @' ?& P. S有時見到題目都感到有點不爽
6 z' d1 [) @" c/ i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& Y) Y, P6 h( e" v/ x9 [" p! S
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....
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0 s7 G; c' B" p! J/ n+ Q2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
' a  R, ?# Q: g) [% ^2 N冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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- N# U8 Q% }. K2 equations 2 unknows
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if 3 unknows there should be 3 equations
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+ S  k. N% u) R% z$ Z: q  e. Z* imake it simple
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5 I1 F9 D& ]/ G+ h; a, Ta + b +c = 34 i4 X. t2 X7 @! N
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a+b = 2& L7 S. U6 U  o+ Y3 p

, t1 e9 M/ V  n7 R$ gthen c is 1 , o8 x7 S( L+ A+ Y$ `, Z  b& ^4 [! K
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a = 2 - b 2 w9 J) L- e' _7 w& {) @5 y" U6 }

$ j/ [6 Q! V1 G9 H: ^so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
  ^& S& \9 i- r+ q+ w冇答案ga....3 k9 f! H9 n& J' t6 ]

0 G1 l9 Z* E% z# a2條equation solve 唔到3個unknown ga....

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" S5 ]$ b8 z% q$ x# ^此言差矣~
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2條equation solve 唔到3個unknown ga
( {- _; Q9 M% C6 B7 C5 Q' A5 _還欠一個條件,就是3條equation都是linear independent(線性無關)的
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1 y4 E: |2 j# ]簡單點說,多元一次方程就是線性方程的一個例子, e* i% `( c3 s9 z2 B; M* m/ K
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3 M% Q9 R- \% m/ [* P7 |

. K' U& f3 ~( 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~)7 y: A1 W. ~7 v6 \  B$ ?# V0 N: h
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
4 J5 C- h2 H$ E1 k- S# O有興趣就解解看
( B/ Y1 P  S2 _; J  j0 z1 u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:
3 T6 W. z9 m) {0 o; ^7 k' J. w捉錯處就唔敢當
( k6 I  J- ?+ h( _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
: f6 C. \: @5 \6 S$ v8 k反而適當地調節一下 , 咁會理性好多
" a0 h# Y& x& T- r就好似隻game 由12粒珠 加到13粒珠咁
6 {3 U/ \8 W# x: [- v當''堂''好玩哂4 ^/ L! u8 U2 ^
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:  \- r  ?1 `" x: s* d, L5 j
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p.s. 求''堂''字正寫...

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已是正寫吧