sakura310

Filename: DSC01158.JPG
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9 b7 ~: {. @/ A5 o& m4 K2008-01-18 00:25:24 | 阿感 | 2
) n( v9 {0 |* \' L" ?2008-01-18 00:24:20 | playbr2 | 23 X- h# y4 W; r4 y( v
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:6 }3 M/ K2 {% s$ L# s( O5 D; Y2 [
Filename: DSC01158.JPG
1 J  h. X7 W6 `0 a/ o- |3 `( xDatetime | Downloaded by | Counts# Y9 F2 J2 v$ T+ n8 }2 Z* \! S
2008-01-18 00:25:24 | 阿感 | 2
2 Y% o* ~/ m. w& A# x8 F1 u5 P2008-01-18 00:24:20 | playbr2 | 21 Z! U4 F3 c/ N6 L0 g$ \; v9 C! ]
2008-01-18 00:22:02 | 但丁 | 2. h4 u8 D) ^1 w6 _
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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
; s/ X2 g. E4 w3 P. B6 P之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:% T& E6 M& l' V& L) w7 ^& k" f1 A& X
Filename: DSC01158.JPG
2 H7 K+ Z# P& f, IDatetime | Downloaded by | Counts
1 n. q9 n+ z- \; P1 W2 A7 [2008-01-18 00:25:24 | 阿感 | 2, t* Q8 O; _- r) a: t5 S* ~
2008-01-18 00:24:20 | playbr2 | 2
, m+ \- M3 s4 s7 X$ z# G4 y2008-01-18 00:22:02 | 但丁 | 2
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  @5 }4 ], ~  H5 T9 B$ N點解大家都down兩次? XD

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快d捉我錯處
1 [0 x& i7 T" N/ [3 ?2 n話吾定我都打錯 + - 符號# u" O7 ]1 `& g3 E
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當: J- G4 V/ ^( ?, B/ a* l
不過,c=101n哥度(解除n係正整數的限制,只是整數)0 U& y  i$ V2 L5 J
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~)
+ ^* \3 B  ?, l知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題: }9 o5 c; C9 {4 M7 {) Y1 t+ e8 ?
但原先是不知答案,所以唔知有無失根
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1 `6 R1 A* s  F- A& ]8 X3 T有時見到題目都感到有點不爽
" P% t2 Q2 ~* Q( A: j1 ]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' l5 D1 g# N7 ^6 l1 O/ k4 }# A
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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7 Y' E" p0 z# @2 X6 U. P! T* `' P2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:& I# |2 |1 i6 b: @% V9 C# H
冇答案ga....+ F+ I% J! Q+ z. ]0 `' a) m3 j
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2條equation solve 唔到3個unknown ga....

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5 r7 J; U# O& j  Oagree
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5 B0 {$ `- b% B6 f5 J2 equations 2 unknows
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) b! D, a5 t0 c% D8 ], P+ Kif 3 unknows there should be 3 equations 3 d# |/ y( ]) O5 ^

6 N. V, I4 S# t8 X( }make it simple
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say
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$ \- Z7 e7 C! T- |9 ^4 S1 `0 Ma + b +c = 3
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a+b = 2
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6 D" I0 m$ c2 q* n( [0 x  [/ o5 Bthen c is 1
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' }9 [1 B( s" n5 m) n3 a2 Ua = 2 - b 8 Y/ i: n3 f$ J6 d# H

  I' O! F# v! Z9 T+ {. G1 hso 0 = 0 4 h6 G. \7 O1 D) h

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:! x9 ?7 J& f5 z- `) [
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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$ S$ w# z6 Z2 I. {0 H此言差矣~: Z% g3 R" u' \: s. x# G5 Z. e/ s. V6 a

; Q! X  J0 G3 E1 U2 `) t# A0 x9 Z2條equation solve 唔到3個unknown ga
8 f* {7 y3 \, F( T還欠一個條件,就是3條equation都是linear independent(線性無關)的4 r5 a) R5 |; J( @( @  z; `5 t

0 H- f& ~1 l; Y( e9 ~簡單點說,多元一次方程就是線性方程的一個例子
2 i; U+ }0 S5 ^, B2 R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
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1 a7 v" U, h1 s& C$ W$ [  m/ Q6 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~)
8 K, w5 A3 C% L0 p+ c/ j1 z例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
" ]& N. z- a! ^# U! X( G有興趣就解解看
% {* B: ]9 t! C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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6 d5 _* p# `: d/ p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:# U8 R1 W7 F+ V8 }% k9 m$ y
捉錯處就唔敢當' c/ p# w( W) A' C* w# O
不過,c=101n哥度(解...

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6 z& o8 A0 L. c. N, }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
, F) B" x7 I2 m, E反而適當地調節一下 , 咁會理性好多
9 d/ u! x: j% M, O就好似隻game 由12粒珠 加到13粒珠咁5 v  D: l( d8 m7 H. X7 l
當''堂''好玩哂! h* o5 w" g- C) I1 q3 ^' s5 ]

) t& @7 U, T% q0 ^; x. @p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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8 i, v4 u+ I# r" n0 Vp.s. 求''堂''字正寫...

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已是正寫吧