sakura310

Filename: DSC01158.JPG. v% j# ^# E  C1 c4 w
Datetime | Downloaded by | Counts. c. Q7 k& ~" o: L. N  T
2008-01-18 00:25:24 | 阿感 | 29 G4 m+ K2 j2 ?
2008-01-18 00:24:20 | playbr2 | 24 x/ |5 C4 M# l- a# r3 I
2008-01-18 00:22:02 | 但丁 | 2
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2 |, Q3 \% X7 [2 J% P% P* K+ o) k4 B# m點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
% P- R/ v* H: W% V* W3 NFilename: DSC01158.JPG* [% X- K* S  W2 K: V* O" a  @
Datetime | Downloaded by | Counts
$ I  I" G9 P: Q2008-01-18 00:25:24 | 阿感 | 2; }' P; |4 s5 k* v0 l6 @; t3 b, Y; D, h
2008-01-18 00:24:20 | playbr2 | 2
# a* h8 f4 R% b% R2008-01-18 00:22:02 | 但丁 | 2! p- l5 k4 |; O3 J# x  e
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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 {6 I' T# E3 w: \0 L) }- ?9 U之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
( }/ O/ E- V0 S! I" JFilename: DSC01158.JPG
( f4 @2 ]6 Z( C. o8 [Datetime | Downloaded by | Counts* k2 \! o6 N/ z: E" U, ]
2008-01-18 00:25:24 | 阿感 | 26 A% h. ~3 l7 S9 M; A
2008-01-18 00:24:20 | playbr2 | 2
1 u$ w$ G5 c, ?! ?2008-01-18 00:22:02 | 但丁 | 2
( F- k- s% `; v
2 e" f, O' O! R$ N4 B點解大家都down兩次? XD

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快d捉我錯處
9 W, u2 A' x& X8 N& L話吾定我都打錯 + - 符號( F& x: o5 ^& ?& t* u. c, D
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當1 c, Q" T$ k; q3 c  r7 l5 ]* k
不過,c=101n哥度(解除n係正整數的限制,只是整數)+ _) X' b) q; E+ m* E: F
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~)
" Y8 o/ q+ }/ \2 C5 c7 @" o* t知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
: |4 ?/ \# Z9 i$ A4 X6 S但原先是不知答案,所以唔知有無失根( ]9 t% {4 ]$ K1 n. r. D# m' T

- I# {) \0 s: s9 b有時見到題目都感到有點不爽. o2 A6 ~: m8 b9 v
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+ l3 z8 h; ~; h7 M* j/ U" {
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條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:8 {2 M4 C: i5 E4 ~7 V- K
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree ' B* E9 Z. z# A1 u! w  R
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2 equations 2 unknows. ^- ~( n( a$ w; d

5 o" C2 W, }  N9 Hif 3 unknows there should be 3 equations 8 @! j7 U/ t# X; f, _

- H$ @8 H1 w3 [  F! Omake it simple : ^4 A6 v0 e" j5 ~1 x/ J# l2 j$ U7 N- t

7 T) g- C" M( ?: X  r/ ?say
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( B9 w; a! K- f' G# S+ k0 ~9 Ma + b +c = 3
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2 w3 E) R6 m6 W7 S' `a+b = 2
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then c is 1 % S. Z0 R/ G3 G
: d; a1 q% j. @1 d* U+ i8 }
a = 2 - b 2 C: F$ Q9 k. K& }

% p7 [# S, t3 c0 wso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:; _# B, `+ ~8 f5 j8 E
冇答案ga..../ w1 ?& H7 ~3 D( S8 Q5 e) d3 i1 \
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2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga  {& i- T8 g+ z/ d$ x( j4 x/ i9 u
還欠一個條件,就是3條equation都是linear independent(線性無關)的4 i( E6 s/ |) q5 J0 J6 b) B* g+ c
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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  i" C: O/ A& Y. p- ~
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, o' B, ^) v+ F4 a# c/ c1 b9 p

% `5 x5 e2 E2 {' l& t1 w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~)
& z5 R& c! E1 l7 T4 W! U0 e4 |例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解6 a1 j, J% S' G) }: q9 f* a# }
有興趣就解解看, h# s- H* s* E) g* z3 R* O
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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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:# O( {, c/ F) B; F# c
捉錯處就唔敢當+ [( V+ O+ s9 C( Q
不過,c=101n哥度(解...

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- t3 k, i8 m3 l9 @0 D0 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, @! F8 k% q3 s3 e1 h
反而適當地調節一下 , 咁會理性好多0 b& r# {  {2 z6 J. q& e
就好似隻game 由12粒珠 加到13粒珠咁
, m8 f0 x0 e0 M5 p" d: `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 14:57:3 o7 ?" v4 M/ z1 B# t$ Q
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% Y: {3 A. |7 a- m4 _, Mp.s. 求''堂''字正寫...

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已是正寫吧