sakura310

Filename: DSC01158.JPG! A+ `8 z0 x' y0 R( R; P0 ]
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2008-01-18 00:25:24 | 阿感 | 26 @: L* |9 o5 O& C: F- I. d
2008-01-18 00:24:20 | playbr2 | 23 B, {# g2 v6 V6 b( R- W
2008-01-18 00:22:02 | 但丁 | 2$ E5 z. F  [' G' R
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:, @% [9 S. o6 Y. x
Filename: DSC01158.JPG; }0 x5 n- T3 |3 a2 r& m
Datetime | Downloaded by | Counts/ B! U; n) r  {- L4 o
2008-01-18 00:25:24 | 阿感 | 25 b% h) P; b$ w# P& m/ |
2008-01-18 00:24:20 | playbr2 | 2
9 W. ~  r; j( c0 B" T- T2008-01-18 00:22:02 | 但丁 | 2& }" @! I+ l" T

& V* }" b! v. V3 z2 q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
/ J! Q& B7 G# X; y% p7 ~/ }, \之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:7 l5 Z; u* N% G3 \4 u- v  h, S
Filename: DSC01158.JPG" O# X: J# N/ D6 O( ~  O# u; J
Datetime | Downloaded by | Counts
1 }8 C8 _4 q! D% p2008-01-18 00:25:24 | 阿感 | 2
5 y. \: L- G; @7 T7 d) |2008-01-18 00:24:20 | playbr2 | 28 m& o9 q5 Q0 R; m1 T" E
2008-01-18 00:22:02 | 但丁 | 29 Q& ?$ l( G5 N5 H+ O! `6 w

2 Q( F. B$ \- i- b點解大家都down兩次? XD

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快d捉我錯處. O1 X9 Z/ O2 S% s
話吾定我都打錯 + - 符號
9 }% `9 a6 R/ e/ y係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
' ?: G: \# _1 k# w( F3 k& {& B不過,c=101n哥度(解除n係正整數的限制,只是整數)% v3 ]' s; m9 k/ T
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~)
/ ]* V- P# Y( n: T: ]知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
9 y6 Y4 ?/ i+ b+ C但原先是不知答案,所以唔知有無失根: W2 v) I+ p4 S7 P

0 V( N, \! Z" G$ m有時見到題目都感到有點不爽
6 [0 J4 V% ?- N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
3 ]$ Y  G6 c& R1 F1 |+ o+ D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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2 N' v; t7 E! Q# S- c2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:- u- u" @! `# C# N
冇答案ga....2 W7 g; N+ x* L
3 v! b7 a; r- W* g$ ?
2條equation solve 唔到3個unknown ga....

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$ [, j2 d- |- b" U& D( Xagree
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2 equations 2 unknows
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8 C/ ]. T  a- Mif 3 unknows there should be 3 equations : X6 Z; a2 N8 h2 D6 D0 _  @

( L- i6 L7 h1 j- w# `4 W: }make it simple + P0 ]3 |, W) k* ], @" B' i

3 e+ T1 j: h" ~! Y/ ]9 O% vsay 3 M4 e) L6 H7 u2 g+ u, T! K5 T! H
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a + b +c = 38 s, d2 l, `3 F2 k8 l

2 h( b5 P9 B/ H+ ?( h8 K: Sa+b = 2& _$ y# D5 u$ ^) V' P) h
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then c is 1
* t3 W, s1 W( n
) [  x/ p1 f* l: m. y! Ma = 2 - b ! [1 H5 |$ n; j) A9 j5 h" b0 m
( _( r7 a; {- s% f$ E3 v
so 0 = 0 , I* e  _9 }8 f
: s8 a$ F5 l" H6 W! Q& S

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' c, U/ c$ m8 D冇答案ga....
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2條equation solve 唔到3個unknown ga....

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此言差矣~! `4 t6 D: O; E1 {

9 g' _9 V; w8 H/ Q' Y2條equation solve 唔到3個unknown ga
0 z! F) ?* L2 \: j; w' O還欠一個條件,就是3條equation都是linear independent(線性無關)的. e$ A( \) X% f+ s; l
3 J+ J9 X1 o+ g
簡單點說,多元一次方程就是線性方程的一個例子
- Y  C4 K6 Y* Z+ U$ K, S) h  s8 U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 ?. ?. K; i' |
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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~)
' ~: e8 Q" o7 }" s% Y0 o( D4 s例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
; F3 A" j2 ?# g; A) X/ a+ r4 [有興趣就解解看5 e( h( f' E4 ]3 F0 I4 b
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:; t' Q3 h4 L5 e. `

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7 D, q5 q3 K' n8 f& r, S9 Q5 v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:
2 H: U) m9 |4 S7 Q% i. J) O捉錯處就唔敢當
, P) T' k" L% _! h; Y  x/ |! a不過,c=101n哥度(解...

7 _" |3 J* b) R) J8 ~4 D0 }
3 S0 z- B. }5 ^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
: [1 P7 w' w" i& q反而適當地調節一下 , 咁會理性好多
6 N( z8 v  Y* O2 l2 |0 n就好似隻game 由12粒珠 加到13粒珠咁. R' t' h$ J, Q
當''堂''好玩哂" B  t0 c/ Q3 _5 a1 f) {- }
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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( A& f/ v9 P9 jp.s. 求''堂''字正寫...

" P4 C. {2 ]' X0 B) @& ?& E7 d已是正寫吧