sakura310

Filename: DSC01158.JPG
7 h, q( y. p9 v7 u9 |, L& c9 dDatetime | Downloaded by | Counts
) S( L! G$ Y. b: L2008-01-18 00:25:24 | 阿感 | 21 i5 ^) l/ e, ]- Q
2008-01-18 00:24:20 | playbr2 | 2
4 B# n. {0 K# w* _9 N2008-01-18 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:: F0 m/ _. m& i: ]4 G
Filename: DSC01158.JPG
6 |& x* }$ K# k6 WDatetime | Downloaded by | Counts5 s. K( X" F1 F$ B6 k
2008-01-18 00:25:24 | 阿感 | 2+ f  \: Q& l4 h& `7 y6 ~& \1 d
2008-01-18 00:24:20 | playbr2 | 2, Y* S+ X' x4 F
2008-01-18 00:22:02 | 但丁 | 2
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4 V! w) {" ?, y4 T+ t- M0 v點解大家都down兩次? XD

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' H% c3 F" \9 _5 _/ v5 @我第一次開睇左2秒就close 左
+ I. o2 h- D/ F: o4 {! O1 }之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( R4 C* h" m- |/ Y; ^* T
Filename: DSC01158.JPG
% E0 c* ^9 y3 `: h8 kDatetime | Downloaded by | Counts! e* B$ h) o% ^9 d/ [: _
2008-01-18 00:25:24 | 阿感 | 2
# W! R1 c9 t* W2008-01-18 00:24:20 | playbr2 | 2
4 m( ^- c4 U& A  W8 @2 S: m2008-01-18 00:22:02 | 但丁 | 2
2 v: `& [; `/ H% B( a: m3 _1 C- l/ e' \: ]5 m
點解大家都down兩次? XD

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快d捉我錯處8 i% X9 c+ `/ [! u8 A) N
話吾定我都打錯 + - 符號: I: I  I2 p" K2 ^3 F
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當2 J1 ~4 k/ n. {3 H; P0 Q9 H& x
不過,c=101n哥度(解除n係正整數的限制,只是整數)8 {8 }* \; a. R* T) q4 p+ o
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~)
3 \6 m7 S- `8 _3 m. X知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
& t4 i" I# t; e+ H- [& I但原先是不知答案,所以唔知有無失根3 G7 E+ S) _$ u% Y( H  U

1 S7 r% }8 C+ y有時見到題目都感到有點不爽
1 t" r( G% t  @* X) 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 a6 @& b6 c$ x8 C$ 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..../ c% }# ?# Q7 a6 L7 Q! L
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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:
+ f& V9 V! N9 |  I$ i冇答案ga....
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) G! ]8 o& o0 `! @- s+ ~8 l" I% o2條equation solve 唔到3個unknown ga....

% W2 H- B  e) ~# f0 J( B# g0 H- K. t8 N# r* m, j
agree
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2 equations 2 unknows8 t4 y, y$ p3 Y' m& }

/ ?6 D% B8 m0 H& E. M, Zif 3 unknows there should be 3 equations
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make it simple
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say ) ^4 p  q3 |( N( F" f( F) H

7 |9 r9 _9 |4 N8 ?1 c3 Ka + b +c = 3
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2 F2 g0 R: o% o" i" H0 ma+b = 21 ~8 b% k7 [+ p2 A. T' _

; B, {- H; u; M. i6 `# Dthen c is 1 ) q. T7 a1 {9 X; k
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a = 2 - b 3 }. z9 C1 m( \2 @5 z
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
4 Q" l. g9 N5 u# o3 l+ B; K2 _5 \冇答案ga....
( L7 O' p" C. {$ R0 h2 |% x
5 ~+ y' n, N2 e8 D2條equation solve 唔到3個unknown ga....

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4 s1 a0 o8 l6 A4 f' `$ J" G
此言差矣~
3 C( H: [) G' Z5 i& z: }, o  C  H% z% v7 g& N/ }( n/ {
2條equation solve 唔到3個unknown ga/ q# [3 c- T( q
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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' o8 _. U6 T$ \0 k8 e簡單點說,多元一次方程就是線性方程的一個例子
( ]7 h- B# T2 G) F8 b3 [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 a$ S9 W3 v( h4 c* B, R6 V( I" e
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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~)
1 H' A( C1 c: V# D例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
. ?8 }! v% N) w6 c1 Z有興趣就解解看
4 y2 V) a4 T1 V) L2 N8 w# m' X; c: b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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( C- m6 W% _8 l# a8 J0 u, }. ?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:
6 ^5 q% I4 N* @0 S捉錯處就唔敢當
+ \: y6 X- i' ]  I7 _3 i! e不過,c=101n哥度(解...

8 `( U7 S5 l) f! O$ ?5 b

5 ]! i8 n# A7 w3 [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
3 A$ p2 v) I. i7 u2 D) K8 g+ ^: l5 s+ r反而適當地調節一下 , 咁會理性好多
' c0 s, ^/ n: t, K. k就好似隻game 由12粒珠 加到13粒珠咁
9 h+ I4 G+ M$ h$ a. Z當''堂''好玩哂0 u* f. T3 D2 @8 ?# [. j' ^, O

8 f. ~% W" p: _& K3 }2 Rp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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! Z! Y- F2 K" M% K) i; C: Op.s. 求''堂''字正寫...

1 p2 [3 J. Q( x" d7 f已是正寫吧