sakura310

Filename: DSC01158.JPG
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- @. I: ]7 r* l) F4 q& b2008-01-18 00:25:24 | 阿感 | 2$ c% ]0 y8 l+ \3 X
2008-01-18 00:24:20 | playbr2 | 2
4 ^: r- L* W1 O  S2 r2008-01-18 00:22:02 | 但丁 | 2( p0 A- {, M- o% H

7 p( B" p2 c" A. ]+ ?2 ~, t點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
& S: X7 @' m" O0 G8 |$ v: \$ v- OFilename: DSC01158.JPG/ j$ U; n9 a9 w# N/ N
Datetime | Downloaded by | Counts, ]* d8 F( R5 I; s& U. ^
2008-01-18 00:25:24 | 阿感 | 2
) M+ G# }% Z7 Y- a( }4 R$ @2008-01-18 00:24:20 | playbr2 | 2; ?: ~" t* C5 e, G
2008-01-18 00:22:02 | 但丁 | 22 W. C. A5 U) ?7 B$ t% f( }8 ^5 ~

" n+ ~0 k0 e$ O* C7 U點解大家都down兩次? XD

- ~9 `( D6 }6 C+ m
. U8 g' {) y7 |. R- x我第一次開睇左2秒就close 左
" p  W( q0 s% F. z' s: d之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:3 _: L) `0 e, O5 a* M% U
Filename: DSC01158.JPG
8 T& M: \2 z6 z5 j& q, Z: SDatetime | Downloaded by | Counts% I6 o; D, n1 u: `, E
2008-01-18 00:25:24 | 阿感 | 2$ I8 c7 e' s% [' O; s  s4 b
2008-01-18 00:24:20 | playbr2 | 2
& p9 {6 T$ b: Y5 D4 ?2008-01-18 00:22:02 | 但丁 | 29 [" [2 W7 s# N* ^- I6 L
6 \7 H7 z! g# M) |- w
點解大家都down兩次? XD

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, A+ I& P: k6 U  f快d捉我錯處; o, z( S! s* D' _6 G; m  G
話吾定我都打錯 + - 符號6 {, ^" F2 n1 l5 E5 R
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
- m- L/ C- A" ?1 o7 k不過,c=101n哥度(解除n係正整數的限制,只是整數), D4 y6 y0 Q& J
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~)
9 s+ ~# {8 h" G; y1 I知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
9 y% ~$ E7 t$ \. y6 {$ J但原先是不知答案,所以唔知有無失根
5 A! m8 b1 H5 r5 L3 h6 i0 q/ H- D7 h/ r: O* \9 Z
有時見到題目都感到有點不爽
1 X$ s; B. M/ `( Z! ?4 d2 b8 u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) P5 g" ]1 I! O, c7 M+ q8 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....
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4 n' R6 d& m! D2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
- Y! ~6 V7 w: |! ^2 e  M冇答案ga....4 s! ]: G) B; }4 i+ s
2 ^! n( {9 D0 W$ X
2條equation solve 唔到3個unknown ga....

4 w* Z/ k" [1 z+ P# H* d! d
& p: ?0 v; H5 u4 s$ R' Hagree
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2 equations 2 unknows; @0 L% {$ k) J4 o# T' W
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if 3 unknows there should be 3 equations . O" y! n" P8 H8 }" t
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make it simple 5 S! A, `5 j  H  ^, s# |

, L  @) I7 Y  W9 s  x5 {say 9 E) S1 s, R. j$ i% Q0 B. Z) |

8 i, c+ s  u2 A2 t  Ya + b +c = 3
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# Q3 F7 R/ Y/ Q3 Q$ ^: B8 X& G" ka+b = 2+ _. B& \& f" o
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then c is 1 ! n8 i7 @1 w& {1 E4 H

& b7 l1 k# {, O1 x- i# {( {0 ga = 2 - b
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$ H* e& z9 |" X' z- j& Dso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
" A( K) M# ~+ w. c& h冇答案ga....7 f+ ^; R2 n" ?5 ]& C
( H& X! z! ~0 G# o& z
2條equation solve 唔到3個unknown ga....

2 Q' d  S3 [/ O, e0 N! n5 H$ _6 m* P1 _. w
此言差矣~
4 {% m; l& h% _7 l- q. C' J! \' Y6 h+ \$ k4 Y9 F) o+ _: g
2條equation solve 唔到3個unknown ga$ n: c* N( u: n% x) F
還欠一個條件,就是3條equation都是linear independent(線性無關)的* `9 R; c/ d- R; F' E  f, a* o! ^
1 L3 u, f5 v0 P" N6 w) X9 e
簡單點說,多元一次方程就是線性方程的一個例子
' p# Z7 O' O/ D6 N6 ?& y; ^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
5 [  x# U! i, k
. O' V: C- M% _1 U7 V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~)+ p. A- m. A; P5 f! P* t% L7 c
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
4 O/ v, ~7 L, a  x有興趣就解解看& K# c* l; s+ ~
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:$ d3 L( \; I1 i, t1 t
捉錯處就唔敢當
5 _9 e! ~6 ~; ?7 ^% N+ f不過,c=101n哥度(解...

, n$ ^: F7 Y+ g0 c, ]
. w- |9 M) \, {, |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
. j/ x0 R2 Z9 \3 b反而適當地調節一下 , 咁會理性好多
) S* x! Q+ K. N$ w! Q就好似隻game 由12粒珠 加到13粒珠咁! D4 s( v  \" F
當''堂''好玩哂% N( o( M# W/ d( ?2 P) P3 k: P

9 e) G( n3 p# [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...

1 j9 u2 S4 ~- v8 c4 U8 ]已是正寫吧