sakura310

Filename: DSC01158.JPG
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( \" b& R/ F* B0 K8 j' ~4 k- ^/ n$ f2008-01-18 00:25:24 | 阿感 | 27 Q+ F+ i) o& Y" u! A4 N+ `2 Y
2008-01-18 00:24:20 | playbr2 | 25 @7 V+ E+ ^7 @9 C3 j; a/ |
2008-01-18 00:22:02 | 但丁 | 21 P9 c! f) S, W  I! e# f8 V

0 Q/ e" Q4 N& `* @1 O點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
- ]0 l# d7 `/ |3 TFilename: DSC01158.JPG
1 r% ~5 D" l8 @& `8 f0 tDatetime | Downloaded by | Counts  `' L* v* Q+ z. n% _( Z2 D
2008-01-18 00:25:24 | 阿感 | 2
- Q' W! j- N4 M1 j2008-01-18 00:24:20 | playbr2 | 24 f( A+ u& A- w5 g5 [: a. J. b
2008-01-18 00:22:02 | 但丁 | 2
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2 D- k4 k4 T0 z  L8 ]0 H7 l( \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 q. r- b: \! q: L1 o, x$ b  y6 V5 R之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:4 i% T+ a$ X( _+ d5 c+ {# |" Z. F9 A
Filename: DSC01158.JPG
2 a# l( r4 N9 d' sDatetime | Downloaded by | Counts
, O7 r6 |1 q% W1 u: D5 p  e4 q- R4 T2008-01-18 00:25:24 | 阿感 | 2
3 d( z) M' _3 D. ]$ t& E# Z3 k2008-01-18 00:24:20 | playbr2 | 20 I% T' X1 o$ _% u% }9 {
2008-01-18 00:22:02 | 但丁 | 2" ?5 D# q# x8 u/ c
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點解大家都down兩次? XD

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$ r- l+ t4 G: F3 y2 J快d捉我錯處
6 p5 [2 \+ r1 M, V$ T% N; l, A% K3 d話吾定我都打錯 + - 符號
. y+ T  y( v* h係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當3 {% J' b+ J2 h
不過,c=101n哥度(解除n係正整數的限制,只是整數)
/ U: P  b7 r/ }6 \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~)* e: m1 V; z! a5 Z2 e. e9 ?
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
* s/ i  y1 c6 s3 j6 S7 K3 D但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
% h" R. d+ y, r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& H" m+ r" a1 J" R2 t) S: 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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5 {! a- f) H' G2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
* D; x' b' |* A冇答案ga....9 ^$ j$ G! C- L. k: D3 R) @, {

6 _* [0 ^! i, l2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows( C6 j5 s5 @8 [9 }1 f' M
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if 3 unknows there should be 3 equations
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make it simple
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4 j. _  r; K; F& I/ _6 r- }4 z( ya + b +c = 3" x7 Z: H' M5 Z4 }% p+ q

) s+ \+ {+ ^6 ]' i9 \' v2 R; sa+b = 2* \4 E) I, I" B0 ^* ?

7 t' @; p( o- M9 K  R0 f7 c* K/ Sthen c is 1
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# l# I6 z. |  U: Ja = 2 - b
  U7 k" a9 r- i9 I, p: Z
6 e$ O+ R# z) C: iso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
# x; v5 X( ^; J9 I/ c) s冇答案ga....7 s2 @/ G, L+ D: q# K
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2條equation solve 唔到3個unknown ga....

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  r( Z6 a8 l7 v  h+ J" R此言差矣~
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2條equation solve 唔到3個unknown ga. o4 ]6 [" @  U" {, z
還欠一個條件,就是3條equation都是linear independent(線性無關)的0 ?: \* f+ u3 W6 M

. K+ o; ?" D! I% W2 z8 J$ `簡單點說,多元一次方程就是線性方程的一個例子* u) n! Z! J, Z3 H3 e7 [$ f: 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0 T9 R) j  b" ~/ k

- ^& N! J. p# g. S: |1 L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~)- e$ M7 N7 Y! P* o! E% O
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
$ O. J; }! p* ]6 o4 Y有興趣就解解看
# g1 E/ @, f( C- h0 w; M8 y9 I不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:* O5 M7 ]/ X( I) Y

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. U& t' B& y& s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:$ n% E' i/ E& |. `$ a
捉錯處就唔敢當8 k& G/ L; }! Z4 a
不過,c=101n哥度(解...

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& E: E$ k! a7 @7 R% F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7 J) @. c; N# C: A6 ]
反而適當地調節一下 , 咁會理性好多5 m4 j8 I9 D6 ^) L" W: e
就好似隻game 由12粒珠 加到13粒珠咁/ Z4 B- |- ^" q8 T7 Y6 d
當''堂''好玩哂
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' L( o/ a9 G$ g( np.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...

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已是正寫吧