sakura310

Filename: DSC01158.JPG+ t# ^. B$ S' G# T- ^5 {
Datetime | Downloaded by | Counts
0 T7 ], J1 D) r1 _6 d2008-01-18 00:25:24 | 阿感 | 2* L$ q9 d8 v9 q( \4 v, I
2008-01-18 00:24:20 | playbr2 | 2
+ ~+ ]6 t$ i/ R/ z2008-01-18 00:22:02 | 但丁 | 2" q- @0 Q4 H& D( M9 B7 ^

, K5 A& v. c' m+ L. R點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
" |7 a% D% k; T9 K6 M5 ]' U/ qFilename: DSC01158.JPG
2 P5 |+ q- w, I& k  A7 MDatetime | Downloaded by | Counts
  R9 a. d+ K2 ?! _+ j2008-01-18 00:25:24 | 阿感 | 2* I; u" h; \! u* c( t+ l4 g# n
2008-01-18 00:24:20 | playbr2 | 2
8 o8 f2 K  u# @7 \2008-01-18 00:22:02 | 但丁 | 2/ k4 y+ F$ c# C
* K! i; W5 ~2 e$ B. I/ g) Q
點解大家都down兩次? XD

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; ~2 v; N0 X# v( W% `我第一次開睇左2秒就close 左
' f" _8 s" W' ?) q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
' C* A6 V/ j( r9 _Filename: DSC01158.JPG. z" X" r2 c( T, s: X; W0 E' l
Datetime | Downloaded by | Counts& n! W) F1 `+ ?! [$ v- X0 r' U! z
2008-01-18 00:25:24 | 阿感 | 2
, h9 P9 L3 b: k! T/ w0 D/ I2008-01-18 00:24:20 | playbr2 | 2
1 H/ M9 I: J: j7 E5 A3 ~2008-01-18 00:22:02 | 但丁 | 2* w. ?: H( v& m# _4 m; w

- M) u) K7 e$ R  D! f4 J, x/ W點解大家都down兩次? XD

1 x! v0 i, y% B4 A9 ^' _
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快d捉我錯處; E0 a4 A& }7 K% |
話吾定我都打錯 + - 符號9 [4 B% d% D; H& A8 ?* Y) W4 q
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
; w. Z: U$ G' B% d  \5 R2 [! M不過,c=101n哥度(解除n係正整數的限制,只是整數)7 s4 V/ P4 u/ e) 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 i  V* C1 \& m# G知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
: C( x6 n& ]# }/ Q! I& ~! r+ O" g但原先是不知答案,所以唔知有無失根* P: P& c6 G4 H2 p6 x( S4 T! o

' ?2 V4 L' j) n, m有時見到題目都感到有點不爽
' g" M' r$ t* _/ E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
; F% [  h7 {% Y" E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:
. L2 O9 X" ^5 {7 J* Q! A冇答案ga....; s+ Y4 m9 F) b1 Q

/ m- b7 n  r7 N2條equation solve 唔到3個unknown ga....

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agree   b, {9 T% ]* R* h+ h
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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3 F7 N; t6 G2 T) T! ~) T/ z% rmake it simple
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say
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a + b +c = 3
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6 g& c3 v- u$ j% i# U* z6 ~a+b = 2
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; j; K, G8 w. a5 k& L% Xthen c is 1 5 J+ `8 N+ S/ U( F1 f! C

' \8 q7 M# K# b) i9 A1 ya = 2 - b
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so 0 = 0 4 @0 B6 I$ z, H) S  p
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:3 P* D' [' O6 s" c( I1 W  ?
冇答案ga....
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' Q8 |6 z9 M8 S/ F# c8 z2 {" R! M2條equation solve 唔到3個unknown ga....

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; s5 }2 ^  ]# q5 B; R此言差矣~
, g  E8 J  F" d: ]0 O: w: C8 o2 x# `/ [6 _4 ~* C0 l0 x9 y& x$ U
2條equation solve 唔到3個unknown ga8 Q8 B+ K: i, s9 B; Q  V& h1 ~
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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3 G0 ?5 k' g3 b簡單點說,多元一次方程就是線性方程的一個例子
! P) ?* {2 w) g2 Q4 J5 w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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0 c4 k( n* {3 ?! {9 ?4 G/ ]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~)9 u" m( C( {- I9 K. O( r0 ^; n
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
8 ]/ [# d: m3 A8 g$ X0 v有興趣就解解看
6 _2 [. {9 F  M1 M( t- ]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:, `$ |- Z3 ^, u! Y' i/ T+ _4 P
捉錯處就唔敢當
) I2 P" [4 I9 n/ S4 @不過,c=101n哥度(解...

2 @2 I% A0 }) L* @6 X/ r

) B6 \+ A9 \+ }' R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# ]1 ~: o2 C  t$ D
反而適當地調節一下 , 咁會理性好多$ g+ |1 D8 [' x* m: Q
就好似隻game 由12粒珠 加到13粒珠咁
( x4 B6 n* k) c5 T; n( k1 U- f當''堂''好玩哂
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- c" A" X3 I) k9 }p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:0 u9 z8 q* v  ]# R/ c

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2 \! M5 K2 Q+ xp.s. 求''堂''字正寫...

0 A% f1 m, q/ W( i已是正寫吧