sakura310

Filename: DSC01158.JPG
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9 }& U/ X' {8 J2008-01-18 00:25:24 | 阿感 | 2+ T% d$ V: o3 B  X( O; _
2008-01-18 00:24:20 | playbr2 | 2
. Q: F: L5 {+ W6 g" V! L9 S2008-01-18 00:22:02 | 但丁 | 26 A9 _0 z3 C) `# \: S1 Z, Z
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
& Y/ y& p* C: T& m# g" GFilename: DSC01158.JPG/ U4 p" \" F, R
Datetime | Downloaded by | Counts  R% u6 t) |1 F2 O& b- q, h
2008-01-18 00:25:24 | 阿感 | 2+ s/ {+ m+ J; H; `
2008-01-18 00:24:20 | playbr2 | 2- }: C3 z; I, ^1 l. i' K/ z
2008-01-18 00:22:02 | 但丁 | 2
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7 Y$ z% x* e2 Q: l1 n% x" E點解大家都down兩次? XD

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1 k0 d6 r8 B+ c7 Q' q8 h我第一次開睇左2秒就close 左
3 V7 M' e# [1 s: m之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:8 x- E$ ^- I7 h: M$ @+ q
Filename: DSC01158.JPG5 }$ F0 G( z( n, j7 d" B
Datetime | Downloaded by | Counts9 c# ?, o; C; A  l' D- O- N
2008-01-18 00:25:24 | 阿感 | 2; p" B; k7 w0 I, G4 y1 L
2008-01-18 00:24:20 | playbr2 | 2( V* b3 ?+ l* ?, t, L; r4 V+ E7 G
2008-01-18 00:22:02 | 但丁 | 2
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6 ?) \  N+ U% p# i  r' ~點解大家都down兩次? XD

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+ K, K( e' }9 O: H( A5 i' r! m. i快d捉我錯處
( j4 J2 e! ?) n: F& B話吾定我都打錯 + - 符號
% H1 T7 W# H2 m+ x係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當( P" s9 Q, h/ X% ~7 K0 B
不過,c=101n哥度(解除n係正整數的限制,只是整數)
8 \# k8 m+ E2 g3 {6 T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~)6 e$ y3 d) \( c' w* u, i  J
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題; u$ b" S$ M9 l8 Y+ K
但原先是不知答案,所以唔知有無失根( J# Q0 ~4 z! o3 C/ p! z( W
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有時見到題目都感到有點不爽9 @+ \2 O+ }) |( x0 k
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1 t7 L6 X' p! n; 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:
0 h' }7 p! W7 E, F4 G/ L$ X9 g冇答案ga....+ d4 l1 Y5 K! E! V: _, x

9 S9 p( b# j' V1 {* K/ q1 `2條equation solve 唔到3個unknown ga....

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4 X8 K# s; k8 \/ O* fagree
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2 equations 2 unknows
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* Q# X: _0 G8 @* J( t6 `if 3 unknows there should be 3 equations % f6 z9 M/ n" D0 c4 C- B

2 H2 G6 }1 M0 z4 z' ]4 L) O1 t9 Wmake it simple
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% C% n' }9 s8 s0 c( i0 \3 L! G* _say
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a + b +c = 3
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' k' ]' I. R5 \7 W7 Z% i* f( ~a+b = 2
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then c is 1 ) v9 c% i+ k+ R2 c; D2 {7 {- g

2 s6 D' x$ J- V- G% j2 A. ]+ F* Ha = 2 - b " ~2 h% o. z9 `" d
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so 0 = 0 8 m1 _% X& o( Y# H6 c

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:  H  b$ y, a) ~- l% X/ i
冇答案ga....6 q. |; R5 T3 n' D( ~6 J( ^
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2條equation solve 唔到3個unknown ga....

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5 j- d% {. u( ~* m# g+ I$ Y; I2 J此言差矣~
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2條equation solve 唔到3個unknown ga
8 Z, P' ^: w0 F& d. d還欠一個條件,就是3條equation都是linear independent(線性無關)的
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! q  H; x% h; c+ x+ P& Y0 @簡單點說,多元一次方程就是線性方程的一個例子
0 h( U2 ~" ~' P- p( }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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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~)( G+ ?3 ]) j- @) ~
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
0 Q$ b8 [% h) ?4 P9 @9 y+ U* j3 V有興趣就解解看
* b* e5 ]8 ]; O不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:; Z1 L1 A, t% ]! ]0 A  {& P1 b
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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:1 ^8 f7 q) G5 K, |/ D
捉錯處就唔敢當, f* x. G4 m5 U9 C. w
不過,c=101n哥度(解...

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* C" S+ g/ o* `* G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0 d# P  D' E4 V. L- E7 V8 ]
反而適當地調節一下 , 咁會理性好多" K; a1 N5 O! s, P: `
就好似隻game 由12粒珠 加到13粒珠咁
; r) i0 l$ |5 {當''堂''好玩哂
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0 v" A+ \" a* n  |6 c& a8 [p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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) t4 X( p% h. ?8 s+ U$ dp.s. 求''堂''字正寫...

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已是正寫吧