sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 29 z' \. X& u5 h& D5 ?
2008-01-18 00:24:20 | playbr2 | 2% G3 V2 P" ]8 i2 T# P! ]3 U
2008-01-18 00:22:02 | 但丁 | 2: n  d0 {5 z9 ^( t5 C7 Z2 `

& C7 m8 j4 B. g點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:4 X6 T+ @2 t* @: a  h  t+ H: h
Filename: DSC01158.JPG
8 o3 j( a: o/ w; C4 }Datetime | Downloaded by | Counts
& j- y0 _% u8 k( l* ~8 B! ]1 L3 y' t! L2008-01-18 00:25:24 | 阿感 | 2
% f! L  Y+ e$ `; g2 v; H+ M: y2008-01-18 00:24:20 | playbr2 | 22 B5 Z$ v/ n/ }3 ]  C8 P
2008-01-18 00:22:02 | 但丁 | 23 F! y7 C& s7 P5 m- N7 h4 R

* ~$ {* w: e- j7 |2 S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
# [1 w1 A. D" u之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, O! D4 ?7 w$ v+ O. R3 w
Filename: DSC01158.JPG
) w5 L2 G9 k) b7 v; iDatetime | Downloaded by | Counts
7 s% y$ W* \) c% g1 ]2008-01-18 00:25:24 | 阿感 | 2" Q  e" e+ _) `) F. f0 [% N. n2 s$ I
2008-01-18 00:24:20 | playbr2 | 2$ _' U+ R, P: K9 F& h
2008-01-18 00:22:02 | 但丁 | 2
3 }5 A- z% j- O* [7 y* T, Z+ G# y
/ p4 E8 ~4 H" J) G' T" `% m3 p點解大家都down兩次? XD

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快d捉我錯處
" G' b4 W6 W$ G) `2 d: T6 g, D話吾定我都打錯 + - 符號
6 H* a7 N. {$ Y) v' e係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當9 C' m9 w. [) N5 A% t9 ~/ @
不過,c=101n哥度(解除n係正整數的限制,只是整數)
/ T- p- G9 A( J- f3 v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~)  C, i- s; O6 w
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
3 t' @6 L1 c- P1 M( n/ y但原先是不知答案,所以唔知有無失根0 R: o# b; K! m8 N" ~' Y- H: H

# M3 M% h& s' L$ C; T有時見到題目都感到有點不爽
6 }- P" A1 c9 ?' c4 g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& \" Q) q; c, v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....3 N$ {$ X+ E) T" D. n
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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:% e' Y% v8 ?3 F% \# K' w* R- [
冇答案ga....
9 a7 a8 d3 r% k. O" `( A
; c/ p* U" T- J! C# B# n( q# o, q2條equation solve 唔到3個unknown ga....

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1 z- A7 ]' P7 N' J5 u7 \& |agree
3 Q. h0 V, [9 e! w) w7 F$ B+ x1 s" f8 ?; ~. G' `( x" `& D3 b
2 equations 2 unknows8 Y! F% }+ g8 K5 v4 m% ^

" w8 H0 j& B2 Iif 3 unknows there should be 3 equations + z' h% G5 a$ F  q$ D) m5 {

; f+ Q2 k+ \: hmake it simple   E& ?8 E6 K4 F$ g( d% R( T9 T
, t* X2 k, U6 a" G' |! v$ Y/ b, k
say * {+ \' z5 k# ^4 n2 l( e
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a + b +c = 3/ ~* b# ~% {" w) I7 a
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a+b = 2! ~; ~2 c" H. T3 E2 T2 d0 `
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then c is 1
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a = 2 - b
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7 ?. m% f. V3 T; P2 bso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:8 `- N1 ~& T; K% G8 x
冇答案ga....
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3 Q( V7 E9 v1 b2 q5 c& K2條equation solve 唔到3個unknown ga....

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& I7 q' R& a* w0 X% }5 o7 f( J此言差矣~- Q4 \7 u8 K8 n4 T, N  {# d& N

" y) L" T! y  [2條equation solve 唔到3個unknown ga/ x' A6 R& Q6 k* R9 R
還欠一個條件,就是3條equation都是linear independent(線性無關)的; F1 q# v( `1 J  u
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簡單點說,多元一次方程就是線性方程的一個例子8 z& T0 E9 c' Q* m0 u0 l
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  |2 \# j2 P" ]( o
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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~)! r) d  f# C" I  x
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解- w/ Y) y7 _( ~  [* ~& m# X6 d+ z+ _- K' W" J
有興趣就解解看5 m0 ^' G! L+ ^
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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* w& A8 `! I' }$ M; [7 Q9 u* H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:
+ L5 x% H( u' N3 H+ a3 j捉錯處就唔敢當( I5 @3 x$ A( Q/ h8 |: `
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
  N4 u) M% x0 E' Q! s反而適當地調節一下 , 咁會理性好多
' X! k( Z2 b1 |+ Q  \就好似隻game 由12粒珠 加到13粒珠咁% F0 h( O5 ?/ }) E# F  a) D
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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6 D. x& t& ]' B% l+ k! gp.s. 求''堂''字正寫...

) \; t9 f; f9 y% ^  p+ t; w; G已是正寫吧