sakura310

Filename: DSC01158.JPG+ K# `& W$ y) _7 I9 J/ ]
Datetime | Downloaded by | Counts
! L1 ~/ X0 I, k3 Q* c2008-01-18 00:25:24 | 阿感 | 2/ }6 |( f9 p* p* e, N1 }! D+ x
2008-01-18 00:24:20 | playbr2 | 27 {# d1 V& |8 S+ T% O
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
. B' b3 m. K2 u4 Y; \4 YFilename: DSC01158.JPG  y0 M! W% h2 ^
Datetime | Downloaded by | Counts* z  o; U: p8 p: j4 L4 h( ]
2008-01-18 00:25:24 | 阿感 | 2
, o. S* `* G0 ~" ?  e1 Y1 x& G8 p6 o+ c2008-01-18 00:24:20 | playbr2 | 2
. h. e7 _) \0 v7 j. Z$ A2008-01-18 00:22:02 | 但丁 | 2
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9 [# J* n4 v6 ^. p2 i點解大家都down兩次? XD

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1 a$ b) }3 O3 ]2 l; M
我第一次開睇左2秒就close 左
6 W( ~% v3 B3 `0 x" d' O之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
4 a4 [4 C$ C% I7 Q( p' c- c# H$ SFilename: DSC01158.JPG) r7 o$ `, o$ j9 w4 c! F4 y8 }# S
Datetime | Downloaded by | Counts1 I# j4 S/ c: [
2008-01-18 00:25:24 | 阿感 | 2
6 m' u& w" \! m2008-01-18 00:24:20 | playbr2 | 21 ~. f% p& h  o& t. m& a5 G
2008-01-18 00:22:02 | 但丁 | 2; J, C9 _: U/ g! ~% \

5 W1 j. Y( k0 Q: W3 a" S" J點解大家都down兩次? XD

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快d捉我錯處
! q; T; G1 i# R5 W+ z話吾定我都打錯 + - 符號3 a8 A. A$ Y3 m) ~$ n" _* O4 h
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
: x4 L+ P; P$ l8 t! p2 F不過,c=101n哥度(解除n係正整數的限制,只是整數)
. M0 H6 p' P! l! X' w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. \$ z& b1 U$ a" Y3 P: [) R知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題  d$ ?  d+ H% R7 {+ M
但原先是不知答案,所以唔知有無失根
2 p) w& @  i: m; i; ~# X' }% V3 V! N  w
8 E! b2 g8 S2 w' Y) {2 N有時見到題目都感到有點不爽3 K) q( f1 l$ Y* X
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6 [' W$ A/ d/ i4 R. 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..... G. k9 g/ M8 X+ h

9 Y2 J0 U: C; B/ o0 }  ^. h7 c6 {% f  K2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
6 P- M7 s/ g5 _! ]) M+ u' Z冇答案ga....
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2條equation solve 唔到3個unknown ga....

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* P9 T* A8 g3 P2 |0 ?agree ) {6 r# F1 y% p! E4 V

. X9 Z3 n; z3 G" `( @2 equations 2 unknows
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if 3 unknows there should be 3 equations 1 O3 }$ s- G3 s5 a* Q: L3 T- p- J
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make it simple $ R- g4 h: b* u+ _
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say
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& a1 q4 n' e' Z( l6 B) pa + b +c = 31 M# n3 V0 H5 p- n2 C( \% W& Q( y

. y4 f0 N6 A  W5 a! ia+b = 20 {8 m5 ^* [$ h) @: H+ [' j

) b( h, D. m7 Xthen c is 1
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a = 2 - b
: p3 q+ O! o8 T) c
8 |' t8 A! \/ dso 0 = 0 , ^4 s0 h4 m& [3 O0 o$ a

, j2 x4 {- Q" B0 `2 Z

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:+ L8 R+ M9 |8 D0 A" R% o
冇答案ga....& x- c' [% ~8 \  E6 E  ?

/ Z/ Z& Q$ Z5 U+ I7 n) E2條equation solve 唔到3個unknown ga....

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此言差矣~! S! F( F# V4 Y& O  ~4 z4 S0 o
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2條equation solve 唔到3個unknown ga
" {" J* x3 `" G! z) w- Z- W& r還欠一個條件,就是3條equation都是linear independent(線性無關)的& f6 X$ T3 O, v8 x7 y- |

8 w0 g) [$ K6 w0 x# }+ I& u簡單點說,多元一次方程就是線性方程的一個例子
! X4 _+ ^1 e% j4 A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6 ~+ r- E8 T% y  A. d- f
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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~)" j1 C; {/ x6 A1 s  H: C
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
9 T  Q7 V( E0 \8 V4 T) O有興趣就解解看5 J, U  ]# g% j* q" @
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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6 o/ L* X+ i6 s9 l7 U  i7 N% z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:
! @" G4 [) w) w8 D8 R* Q捉錯處就唔敢當' f% t/ {) q' U7 E& d
不過,c=101n哥度(解...

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( d+ y- w/ r1 i, J  V8 ]4 z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# s9 l3 f9 A& d
反而適當地調節一下 , 咁會理性好多1 p" R- H2 ~: R7 f+ o3 c7 B: C# }: m
就好似隻game 由12粒珠 加到13粒珠咁
4 L/ ]; q$ c3 j/ Y& e# N+ J: g當''堂''好玩哂# I" A% q+ E, {6 J) b5 Y

  T# q4 f1 f$ z" ^, `2 w4 A9 cp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:( }4 n4 q) g3 O0 k: V/ m

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p.s. 求''堂''字正寫...

$ E; k6 T: [& H) l已是正寫吧