sakura310

Filename: DSC01158.JPG0 [$ P0 v8 q6 w9 N& N! X
Datetime | Downloaded by | Counts2 R4 m8 V7 x0 y5 M, Z/ y! @
2008-01-18 00:25:24 | 阿感 | 2
+ @; C. r0 T, _/ e2008-01-18 00:24:20 | playbr2 | 2
4 k( S/ ?# c  Y1 k7 s9 A2008-01-18 00:22:02 | 但丁 | 2) p- t1 W( |& u0 n
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
) Q1 r! M$ V& l4 I" a! JFilename: DSC01158.JPG
; q4 l( q/ P0 [" I. B  h. ^4 xDatetime | Downloaded by | Counts# F5 W1 w/ Y) H& X# A' ?. H# H
2008-01-18 00:25:24 | 阿感 | 26 p: ^. ~; ?6 d9 v9 u# U8 L
2008-01-18 00:24:20 | playbr2 | 26 `& o& F! E' h
2008-01-18 00:22:02 | 但丁 | 2  w# i% {& c! j9 e& e+ x# Y
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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
6 [3 z3 t$ n4 z7 L4 H5 Y之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:% E4 G$ z6 B9 @
Filename: DSC01158.JPG
# P% I# R2 m. Q* }0 lDatetime | Downloaded by | Counts
% u. a1 N: B& ~. A9 f2008-01-18 00:25:24 | 阿感 | 2
9 m/ f. _4 _& n- \; ], m( K2008-01-18 00:24:20 | playbr2 | 2
6 R( Z+ a* @6 J# \  A2008-01-18 00:22:02 | 但丁 | 2
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" P7 P, r8 n6 s) R點解大家都down兩次? XD

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快d捉我錯處6 g% W, X" l1 K2 n- ^! s. l' L3 G
話吾定我都打錯 + - 符號
& S+ K- b6 a6 a0 o係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
! k9 b; |$ s3 e6 @7 D, _, T不過,c=101n哥度(解除n係正整數的限制,只是整數), f" W" k- z  Z
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~)* S0 J  V; ?& u3 K5 H2 d
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
/ _9 e8 z* ]2 ~+ h0 |但原先是不知答案,所以唔知有無失根* J! H5 E$ ~9 N) |

% O0 f$ D* A1 H- |4 A有時見到題目都感到有點不爽/ F4 y) R* j/ @  T
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6 I, g! r8 ]& s6 J- _- M
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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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:6 f" y) V0 j0 d( A" Z0 j$ z
冇答案ga....
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! d7 q4 O5 t1 h: o, v, a6 Y2條equation solve 唔到3個unknown ga....

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/ ?1 _' ?4 L. Z% L6 lagree
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2 \9 z0 B$ j) ?" {2 equations 2 unknows
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( x. M# z& Y: R8 K" qif 3 unknows there should be 3 equations
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7 y7 v- S6 V) n* amake it simple
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( Z9 y( P! X3 k6 _/ O4 r* _say % X8 s2 B1 u$ ^5 W4 n8 v

2 C( i0 u, a  \4 `( ~( Ta + b +c = 3
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a+b = 2
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then c is 1 + e. t0 J1 I4 B0 G& c8 y* T! L2 J$ M
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
% C- @/ p! Z1 {+ \  Q冇答案ga....
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2條equation solve 唔到3個unknown ga....

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此言差矣~
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! M. A7 d4 x/ V2條equation solve 唔到3個unknown ga
1 ]3 G. t& w# i0 k$ B- o2 l6 l, Y還欠一個條件,就是3條equation都是linear independent(線性無關)的
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! @0 X9 r0 H# I+ U% Y簡單點說,多元一次方程就是線性方程的一個例子
- ?3 I. S/ J4 `4 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, v: w/ I/ `7 Y0 `# c. L  U

- ?5 A6 F% t# P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 K1 d: }" |+ |8 B例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
4 y( b# r/ d" B: r有興趣就解解看
9 F7 }) F# {' c& c不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:0 g0 p, h- S9 Z
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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, H4 W+ \# o9 w7 O# o捉錯處就唔敢當  x# A3 {: l2 |0 ?
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  g, m# {' m$ `3 b6 P1 Q& _
反而適當地調節一下 , 咁會理性好多6 b4 |3 E! |% D* W
就好似隻game 由12粒珠 加到13粒珠咁
% W4 I# [" I9 [+ y8 ~2 S4 q- ~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:. n; j8 C6 \) N. |
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p.s. 求''堂''字正寫...

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已是正寫吧