sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
- z" B9 h4 e& s0 D$ @+ ~2008-01-18 00:24:20 | playbr2 | 2
3 Y% ?% L( d, B2008-01-18 00:22:02 | 但丁 | 2* m' ^( g- a1 m( i" h

; W. G' O% v) f1 q" ?點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
# l, r5 I& i! ~( tFilename: DSC01158.JPG
1 }! s8 n' f( V7 u' t; T+ U. o( uDatetime | Downloaded by | Counts. q# @# {6 b) f, E- Z# Z
2008-01-18 00:25:24 | 阿感 | 27 i8 S6 n5 G6 n) e$ N- \
2008-01-18 00:24:20 | playbr2 | 2* q1 J% }5 {1 [* d4 d8 C2 Q
2008-01-18 00:22:02 | 但丁 | 2
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* i2 R3 o- {2 E  l+ A1 \4 g3 N2 J點解大家都down兩次? XD

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& G- o* T( L* V, O! z* S我第一次開睇左2秒就close 左
3 v5 @/ r& D" d之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
3 M7 P* m; |# M5 d, G/ BFilename: DSC01158.JPG
+ w# t$ K2 Q3 K4 N$ X; {6 ?+ j: CDatetime | Downloaded by | Counts4 e) S0 x! w5 y' [& n
2008-01-18 00:25:24 | 阿感 | 2
. K0 Z# l1 I3 U! `  K& |1 _2008-01-18 00:24:20 | playbr2 | 20 b! Q7 q  [! n7 m* W8 l2 ?( G
2008-01-18 00:22:02 | 但丁 | 2
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1 d4 @. C' k, H  K5 i* j1 a點解大家都down兩次? XD

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! G$ ]# S' x  L快d捉我錯處, F* {) y: F7 D
話吾定我都打錯 + - 符號
& b: L! e" h/ M! \+ p: E3 `係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
. i9 I2 f- M5 T- q2 q+ n* Q0 {不過,c=101n哥度(解除n係正整數的限制,只是整數)
0 T7 {( ~+ l- k3 A) Y) x( y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~): h' \- l/ @& g0 ^
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題2 g" A0 P  z* |) r& J
但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
3 o5 I0 K+ E, R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
$ T) k( T2 W/ Y0 u- {; q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....( N  F7 C9 s( D- s! X
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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:" \' T  C/ K3 _$ T; ~
冇答案ga....
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: C" |, N$ |7 }8 B- G. H& Q; d2條equation solve 唔到3個unknown ga....

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3 l! L2 t% w0 v* z. z: t. Zagree / s$ m& C; t: B# l3 @9 X

8 d% t) e- D6 U' o# P0 e2 equations 2 unknows
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if 3 unknows there should be 3 equations 3 d6 N) N/ p* C: \7 q& P
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make it simple
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( e: b, r2 w) _9 |8 q" L/ Tsay
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a + b +c = 3
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a+b = 2
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then c is 1
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a = 2 - b
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: r; M2 N2 B: D) e4 _. J* Dso 0 = 0 , t8 w$ T# ]( O3 ]

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:2 |% |( F* y1 {
冇答案ga....* ~* s1 e7 G; m( m: K/ V+ x, D+ K

0 l* D  ]  R/ i2條equation solve 唔到3個unknown ga....

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此言差矣~5 F. e* r( _" \4 H7 G6 A, x
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2條equation solve 唔到3個unknown ga) ^4 k% c- E# E* E9 p; X6 c
還欠一個條件,就是3條equation都是linear independent(線性無關)的, u# c5 J6 s* c0 F( Z

% u2 r4 c7 }& u0 r8 `, i簡單點說,多元一次方程就是線性方程的一個例子
- l0 L5 O5 I3 n" {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~)5 Q: s% B: z( Z9 @3 e) M
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
' f0 |$ c1 w7 f9 l3 `: `5 e有興趣就解解看
. @/ g6 K3 G! E! E+ [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:
( y) X% Z1 |+ D, t4 V  t; _捉錯處就唔敢當
  e! h% g' v9 s, a* C' N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3 p$ s; G# f! I$ |3 ]& U  _
反而適當地調節一下 , 咁會理性好多
4 A- _5 w, b. x1 E2 ^就好似隻game 由12粒珠 加到13粒珠咁' |, O, M$ K7 d/ m* I
當''堂''好玩哂
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7 y5 |4 x: @6 ~& i& m1 Z% Fp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:3 Q; E8 K! s8 o7 `
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p.s. 求''堂''字正寫...

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已是正寫吧