sakura310

Filename: DSC01158.JPG
0 ^+ ^2 l- J2 C' ?- w2 {$ l# @; hDatetime | Downloaded by | Counts# z' G7 ]0 d- u4 L3 b
2008-01-18 00:25:24 | 阿感 | 2, p: H4 K( N4 `. W3 ~; c
2008-01-18 00:24:20 | playbr2 | 2* U0 Y: Y/ }6 m9 O. |0 I
2008-01-18 00:22:02 | 但丁 | 2. G; v2 r# y6 K

  Q2 I, w% ~' p$ o% a點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
) n& q8 ^/ \7 c2 q) B7 L) A7 H3 H, aFilename: DSC01158.JPG7 a- ?; ~/ G. j5 m. c
Datetime | Downloaded by | Counts
$ a7 [$ o( g) y2 c2008-01-18 00:25:24 | 阿感 | 2
, k. }) D$ i! Y( l* T, D2008-01-18 00:24:20 | playbr2 | 2  l, Z6 x: I+ r
2008-01-18 00:22:02 | 但丁 | 2
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0 O$ B- ~; T- G+ t6 K點解大家都down兩次? XD

8 j, n" w) s& l9 s% U

( k4 ]( A1 h/ N+ Z+ V$ h& d& h我第一次開睇左2秒就close 左+ o; m! A2 d* r* ^
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 U  K: L; i2 E9 ]6 }# eFilename: DSC01158.JPG
7 M+ W1 L6 a$ n; }, O$ l" A5 @+ jDatetime | Downloaded by | Counts% e1 i5 n4 L) N; ~+ t( x
2008-01-18 00:25:24 | 阿感 | 2
3 J  j8 g' ?1 n# O, X2 z2008-01-18 00:24:20 | playbr2 | 2
  ~3 q& U6 h" z$ \& D1 `/ |  s2008-01-18 00:22:02 | 但丁 | 2/ \# |0 I% D  ?2 \5 c

- r! A" a/ O! H0 R. u! ^0 \! W點解大家都down兩次? XD

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$ d, m& o$ |! p$ P" b' ^7 g- y+ e
快d捉我錯處% f- A0 s& @4 N  K% w  i/ {4 u# O
話吾定我都打錯 + - 符號# b/ I. `! E1 _! \
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當& h) q9 n4 N* l9 [' M' p
不過,c=101n哥度(解除n係正整數的限制,只是整數)
, F7 J5 c8 G( h8 n2 C% d2 @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~)
; o- y7 w3 d* O& ^: K- j) g知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題9 r2 S2 r  I+ x. a1 K; {0 O! x
但原先是不知答案,所以唔知有無失根
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. G/ i; v" x8 p( s" {+ C+ K有時見到題目都感到有點不爽6 `( E5 a  ~" l. h: c9 O
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
; E; J7 L$ \' [; y3 y( C7 X, {" i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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* m& g0 U7 \3 b. X0 G2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
( x0 s0 ^. {; k2 x( r7 A* n冇答案ga....( V( c3 b& K' @4 a" V
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2條equation solve 唔到3個unknown ga....

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agree
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4 b; o& M" ]4 n5 g2 equations 2 unknows) \  G5 H( E$ c. @4 y0 r
5 _, b9 {1 A( v+ z4 j4 c
if 3 unknows there should be 3 equations
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make it simple $ n2 g- t$ P" ~

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a + b +c = 3! D/ B2 X2 T7 {3 o7 f9 T" W

+ e% d! R% P5 ^  v3 ?3 E  Aa+b = 2
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( y  k- V# c8 ~! N0 K, vthen c is 1 9 w. P- s  [3 A. z& K7 W  L
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a = 2 - b
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- b/ R( J: z1 l% l0 U$ xso 0 = 0   y- k( X. r4 Y/ L! _$ A
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:3 C$ T' _* p1 _- i) X  p0 u3 z
冇答案ga....
, u; K, H4 Y. v' ~+ O0 E" C' `+ H- Z
2條equation solve 唔到3個unknown ga....

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此言差矣~2 p8 K3 _  ~# H- n1 Q" g9 Q' {

; A! e: N0 w* I1 T4 @+ t& T$ z2條equation solve 唔到3個unknown ga7 c* E& N5 K/ W: p  Q. E$ v3 }
還欠一個條件,就是3條equation都是linear independent(線性無關)的
$ q- N, j2 ~5 _( a% P5 U0 Z! _" z0 r4 K
簡單點說,多元一次方程就是線性方程的一個例子
% u) T8 {- H4 D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7 [, W8 z& x$ v' i; _$ \

1 h% L7 M: w$ n: g5 Z; n- M) }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~)
  ?( F4 @- j& N/ z) x) ~& e( f例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
; E9 d! {( l. Z4 R" D* D  A* U' j有興趣就解解看
; w! y  k* H0 D4 j3 J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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! i, h* ?" T2 S+ u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:- _( x8 }8 S! N& ~% [& V+ l$ X) \
捉錯處就唔敢當( I# M, F" f0 |4 G
不過,c=101n哥度(解...

: S. k, J' @+ J& }! r- ~
7 q/ T$ Q: ~3 V
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
8 j. X- H3 t) O/ {3 t7 p反而適當地調節一下 , 咁會理性好多' u3 m$ J) K' d7 G" f: Z
就好似隻game 由12粒珠 加到13粒珠咁3 ]9 u) t: z& j" l. l
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:
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p.s. 求''堂''字正寫...

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已是正寫吧