sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
$ {- U8 w; q3 N. l! D7 x! m2008-01-18 00:24:20 | playbr2 | 2
, k( \+ o* D; \: i( E9 M+ f2008-01-18 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:
' Q7 F0 h6 S( Z* q$ G8 ~3 e$ uFilename: DSC01158.JPG
2 C! Q0 {( X" n: ^$ {7 jDatetime | Downloaded by | Counts. d; k3 Y9 L" Z9 F1 z5 `  G
2008-01-18 00:25:24 | 阿感 | 27 L9 x7 D, w7 k
2008-01-18 00:24:20 | playbr2 | 2
8 u2 @6 p, H" L5 u$ Q" l, d# n; v2008-01-18 00:22:02 | 但丁 | 2# }; |( @) G0 `' v+ C

5 S) H0 z' f! E5 h# l* \點解大家都down兩次? XD

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6 `) ^) X# {6 P0 }+ \我第一次開睇左2秒就close 左
4 o: Z5 ], G7 r6 q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:0 D0 m( O/ f2 }& m1 C- A
Filename: DSC01158.JPG
: @6 B8 w4 \& B5 ]% MDatetime | Downloaded by | Counts
  y3 p2 y2 u: S. A, N* _( V  p- N2008-01-18 00:25:24 | 阿感 | 2& E# ?3 A  Z% R6 a# {
2008-01-18 00:24:20 | playbr2 | 2
5 V7 ~+ `: z8 {5 W1 R0 N. y  Z7 ]2008-01-18 00:22:02 | 但丁 | 29 J$ J* d- Y; \% W! W
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點解大家都down兩次? XD

- M  N5 J) B) @% Q% L' I# E  g
) V$ _" }* N, b5 `- {快d捉我錯處! Q4 S9 @& [) E. J. [4 `
話吾定我都打錯 + - 符號
9 F7 H8 G! T& i* y6 P係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當  k4 A/ P/ n. t
不過,c=101n哥度(解除n係正整數的限制,只是整數)- B9 a2 S1 @; G1 p* a. 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~)/ j2 a" n9 x& Z
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
- I5 @2 h) X: K0 w/ V1 m$ ]  _) c但原先是不知答案,所以唔知有無失根& z* I4 }  D5 Q' K
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有時見到題目都感到有點不爽
5 L" f; q) {& q4 V. 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
9 R( G/ L  ?$ E- D8 W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....* W2 S. k& M- i7 R

3 r. @; I$ X1 j2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
3 x: t5 d) [1 G* N6 c# V. n$ M冇答案ga....: \7 O, F+ n  Y( O9 C5 n3 L
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2條equation solve 唔到3個unknown ga....

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" D2 Z7 u  ~$ P: Tagree
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2 equations 2 unknows
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+ }* w9 H; ~4 c% Y! X, hif 3 unknows there should be 3 equations
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make it simple
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5 @& y* G- Q  ~+ Bsay , X+ B  L  ]' F7 f  Q

( \6 s: w0 s7 {: p: v! Ba + b +c = 3
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a+b = 2
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then c is 1
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8 h& b0 {0 K7 S4 d6 Q  ia = 2 - b 3 D' S" Z) j6 A. ?# K

" G1 _" @1 J+ P6 D  i- [" J+ fso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:" X) S6 @2 J% }7 X$ z
冇答案ga....6 A* t3 f: J4 O: ~

% l8 s! E$ G! _2條equation solve 唔到3個unknown ga....

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! N. _+ m! J9 P8 }  c$ h' f$ Z此言差矣~5 z9 x1 N( {) v# j$ m
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2條equation solve 唔到3個unknown ga! S, U7 F0 I6 B/ ~* P# S5 k/ `
還欠一個條件,就是3條equation都是linear independent(線性無關)的) g$ q; t- a3 H0 X
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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: y' f7 v/ G3 y! ^' A) d: V) p; r
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~)
" Z4 E* ?5 G- m. y: g# i/ @1 W7 G: z& Y例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解! i6 {9 ^; ]% y3 r' `
有興趣就解解看
3 }" \, \5 |+ v: p4 ~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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9 O) Y5 L# y9 J$ M& g+ y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:
/ d+ f# F2 k4 x# T5 y- g捉錯處就唔敢當. G! D2 Q+ y: P. O* H
不過,c=101n哥度(解...

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9 \& Q3 B& D0 k5 K. z8 n% b# A5 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" e4 A: p- c6 P; N. r$ _5 ?
反而適當地調節一下 , 咁會理性好多3 h) s) ?3 d+ \9 C5 @6 c: X
就好似隻game 由12粒珠 加到13粒珠咁/ M  c1 e& h/ C
當''堂''好玩哂2 O5 J( ~) G. k8 C5 r6 b

9 W  g5 P8 w% W+ P) m. A: {; `p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:# {  V0 [( N0 G5 `

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+ X( b! h) m) D* G  l8 ep.s. 求''堂''字正寫...

9 q& `4 Y$ {) v% e已是正寫吧