sakura310

Filename: DSC01158.JPG+ C- b$ a) j- g# V9 F& Y9 s" e
Datetime | Downloaded by | Counts/ z. f2 b3 j) l; P5 i' ~1 U
2008-01-18 00:25:24 | 阿感 | 21 \, z' M8 `; u9 @8 a* K
2008-01-18 00:24:20 | playbr2 | 2
" |+ N* y* B" @+ q# l' L2008-01-18 00:22:02 | 但丁 | 2
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/ b  d" C! S# \. `# U# g點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
1 i1 y# e+ E5 I1 h8 v' sFilename: DSC01158.JPG
1 s' @  M* h3 `  @* W8 b5 K; IDatetime | Downloaded by | Counts/ h+ q7 \3 V* x$ ~2 t9 ~
2008-01-18 00:25:24 | 阿感 | 2$ N3 n8 ^2 M& r: q
2008-01-18 00:24:20 | playbr2 | 2& W( O) G, m" A" Y! ~! y0 Z6 ?
2008-01-18 00:22:02 | 但丁 | 2
8 E( o9 h3 b5 u7 S( d' e, U. ]# J- y9 s& k9 N& n5 [
點解大家都down兩次? XD

5 E, T9 B% O6 x2 t- e! ]/ t" u
) |4 k1 G" l& k& v7 [我第一次開睇左2秒就close 左- }, j2 H" ?9 F/ w- A
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:1 p  S( d2 v7 y) E( o4 U, X: N& W
Filename: DSC01158.JPG
0 I; H* Y' `  jDatetime | Downloaded by | Counts* J- s/ f& Y; q$ d
2008-01-18 00:25:24 | 阿感 | 2: D; _% A! N( @6 Q. C$ C# S
2008-01-18 00:24:20 | playbr2 | 2$ {4 a* Y" H; d8 _5 G; j
2008-01-18 00:22:02 | 但丁 | 24 C, j* C! b3 [1 H( j& z- Z6 V
. V. F' Z* Q& t9 x
點解大家都down兩次? XD

- b' @# a, H- y6 j5 m: Q' Q+ O" P3 i* ~4 }( ~3 w1 l
快d捉我錯處* [# u+ K2 I* O
話吾定我都打錯 + - 符號
2 T" X# h0 u2 ~3 y4 |係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當. \5 o; J2 }0 i# j. V; Z6 s6 [
不過,c=101n哥度(解除n係正整數的限制,只是整數)2 v* Z+ g. ^& p* z
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~)
- [# b5 @* G) Z8 _& g知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題- X  q" j- {  u  F5 m
但原先是不知答案,所以唔知有無失根2 Z# s) o7 G8 z) c, X1 _. e

+ N+ q! _8 X$ B5 N有時見到題目都感到有點不爽9 y& }* e. `  r8 Q
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" X1 e# L; G! H7 {( b3 Y
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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& e% _/ f, z8 h$ A2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
2 G; V5 V) ^( b- f: d5 D冇答案ga....
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# Y  w/ U  k$ {1 [& [- F! l$ t0 Z2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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5 g4 @) \4 W2 R4 L" U7 vmake it simple
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a + b +c = 3% O" P$ {0 R3 h+ m
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a+b = 2
2 l! A# ~. p- F, H/ t& [6 y$ b8 B* c
then c is 1 : F# h& R" s4 e

/ d7 S, i7 L9 W1 ra = 2 - b ( r- c8 ^/ `2 L  N) F9 z
9 V7 f7 o- V# x$ w( W% D; `8 i- @
so 0 = 0 , X* g# M9 W7 [- c, f
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
+ ^! U! p) L9 L4 ~+ @+ ]冇答案ga..... C$ W: c' F: s
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2條equation solve 唔到3個unknown ga....

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+ A$ p$ P3 m: Z# F4 G此言差矣~
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2條equation solve 唔到3個unknown ga
  N# T- o5 i- b6 l% V6 s還欠一個條件,就是3條equation都是linear independent(線性無關)的/ f$ j& h; D- H
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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) `$ ]0 W9 D; T' [
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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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~)0 f- C2 V# G9 C& p- w
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解' i. {8 j5 L1 d; L
有興趣就解解看
. ?7 o# R. e6 o/ Q6 W不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:/ }! M$ B2 ?7 C

7 ]+ k3 q, C, `" j( ^
$ N8 a/ B6 \8 T& V, P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:0 g3 V9 D( _8 F; ~5 B
捉錯處就唔敢當4 j4 O" E! q2 }$ t4 Q. O2 A- V
不過,c=101n哥度(解...

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+ z( u: p5 M2 V* f- C0 x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
% m! }. B; s3 V反而適當地調節一下 , 咁會理性好多& K% u6 e. m! S. `2 ^0 r
就好似隻game 由12粒珠 加到13粒珠咁
" O: J8 L8 b1 J8 {! {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:% l' @: \% p% }# x. u9 _% q

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p.s. 求''堂''字正寫...

* `7 E! e+ T9 F3 M, s已是正寫吧