sakura310

Filename: DSC01158.JPG$ _& O' V0 l0 Y" Q  Y2 E
Datetime | Downloaded by | Counts
: |+ K/ a+ \+ n! z8 @5 v# C2008-01-18 00:25:24 | 阿感 | 2
2 L) e) W* r& }  }2008-01-18 00:24:20 | playbr2 | 2
- l: R$ l2 Z# v8 A9 I5 Y) ~" g2008-01-18 00:22:02 | 但丁 | 2- V. L. H( K8 z2 B) |( {& A

$ F( h0 \0 d+ L5 @$ e+ X4 P點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:  }) z6 c0 A, x3 n
Filename: DSC01158.JPG4 D7 h; w/ i/ T+ l, u/ z" A
Datetime | Downloaded by | Counts
+ Y$ Z. z0 D1 T8 n7 R4 S2008-01-18 00:25:24 | 阿感 | 2! m( D1 @$ `( J7 f9 _
2008-01-18 00:24:20 | playbr2 | 2% e* Y3 m9 `$ r4 H9 g0 D
2008-01-18 00:22:02 | 但丁 | 2
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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
4 x: _" G( v' G) j! Z之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
3 q( N; ~' A6 ~: BFilename: DSC01158.JPG2 H# S+ @, i' P# T
Datetime | Downloaded by | Counts  ^2 l% d2 q* J! z  t
2008-01-18 00:25:24 | 阿感 | 2
) n& Y# T" _0 N, O2 o1 s2008-01-18 00:24:20 | playbr2 | 2' J% Z8 f" P2 v$ U* t! e" u* u0 l
2008-01-18 00:22:02 | 但丁 | 2
  |: z2 S- R* z& I" L$ P+ x7 {
- d# G8 j& n5 A' A3 w7 r! G點解大家都down兩次? XD

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; E0 r$ X, o* I9 z) P" x/ D$ J: z$ V快d捉我錯處0 L3 y4 D( A0 E0 N" q
話吾定我都打錯 + - 符號* F/ l* A* y5 M/ S. X0 j: F+ F+ X
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當) h1 N& h# ^* x' f% ~8 M
不過,c=101n哥度(解除n係正整數的限制,只是整數)
" ^6 a2 W0 H) @6 E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~)
% u/ g7 E' G+ w& @' w, C知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題5 B! @/ A/ L& }# f7 V9 I
但原先是不知答案,所以唔知有無失根! g' u/ \0 V: X; m" w& r: o5 b
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有時見到題目都感到有點不爽
7 J9 m" J& u' {! f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) W7 w1 K' b# ]7 B
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....# Z; O3 G( \2 H* |
# p' p8 P4 U- ?; t/ p1 Y/ V, {
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:3 l& {, u$ {# D. o
冇答案ga....
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8 w" v/ D! R2 k2條equation solve 唔到3個unknown ga....

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agree   j1 b0 n: ?& y: a

2 l7 B( @; J9 d) e2 equations 2 unknows+ {  @, l9 C. c2 {- o
# M4 ~+ c/ t) x9 x1 W# s: ?
if 3 unknows there should be 3 equations . l% U# K% K. j0 e2 H
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make it simple ) j" I* e+ }! E' U& ?3 S7 D+ L
5 S. }7 c1 _/ {( i4 |; G9 f$ ]( I. Y' ]
say - z5 `* e8 h( n) b4 |
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a + b +c = 3- u; x( B" C: M( ?: Q1 v

4 n9 w. k5 l" \' V% X* Q2 m% N/ Ga+b = 2
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then c is 1
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a = 2 - b 8 O3 M; |6 P& p$ S1 p  G5 |
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so 0 = 0 $ Q* X( ]# ^* V- G" x/ @+ A: Q7 U* m$ K
5 ]. m) e" u" P

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:, h" Y1 \7 ^4 g& N+ E& ^
冇答案ga....( W, v# r# A0 y

6 T0 |9 i) I7 [& A5 E9 p% D- M2條equation solve 唔到3個unknown ga....

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此言差矣~" [9 r- {0 t0 F) Z5 r% R: t
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2條equation solve 唔到3個unknown ga
  ~) ~( b" ~# J0 I( l' N; U還欠一個條件,就是3條equation都是linear independent(線性無關)的+ O. b& a, X3 H/ W# r' ?
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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& R- g1 i& B; S. N% N' K" e
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7 U4 j; i" [0 @* L7 b9 J# d
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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~)
+ |5 F1 T4 Y, p6 ~例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解! a- P3 |$ d0 j6 e6 x
有興趣就解解看- B' v9 `6 G  g& `( H
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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! W  u3 @. |" G( G# z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:8 H" b6 `; @# t3 j* O
捉錯處就唔敢當4 O, `. y& G2 Y$ x3 B7 f
不過,c=101n哥度(解...

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8 g2 T+ b) A4 O" 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
# @7 R& }! ~# Q$ L# X* n反而適當地調節一下 , 咁會理性好多0 O" `; C( n1 `+ e! q- k( n
就好似隻game 由12粒珠 加到13粒珠咁' C$ h$ S# `6 y( o, ]
當''堂''好玩哂: k) Y7 E! ?3 T7 S- |( p# @

) ?1 ]$ r$ P4 f4 h3 Y, Gp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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  p9 l: R) V$ }, c2 A/ g9 Np.s. 求''堂''字正寫...

& f* T% r& e" d( q  _, o% T已是正寫吧