sakura310

Filename: DSC01158.JPG8 N+ d1 r& V5 ~& h
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' x, S  w8 z; t5 e  B* k* a2008-01-18 00:25:24 | 阿感 | 28 ~: Y0 I% I  W  D& A0 `
2008-01-18 00:24:20 | playbr2 | 2
: ^& F' V5 r. l# c* |) g3 `2008-01-18 00:22:02 | 但丁 | 2: L8 i; q! V) ?3 p
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
9 v9 b" I  M% G5 L  b2 JFilename: DSC01158.JPG
3 p7 J+ G6 H) I0 }, @. N" G, aDatetime | Downloaded by | Counts
7 R' ?4 }/ I8 n, o& x8 X/ V3 k. m5 W2008-01-18 00:25:24 | 阿感 | 2
4 u  t. W/ L; m% |, ^2008-01-18 00:24:20 | playbr2 | 2/ y' @/ K7 s6 _7 {- e: @6 E& W
2008-01-18 00:22:02 | 但丁 | 21 j/ ?5 e9 O: ]% U

. c# }( @: @/ O$ ?0 [/ B3 G點解大家都down兩次? XD

, U% b' }2 {; I; p

; \- h0 q' z% }2 x# P$ M" {我第一次開睇左2秒就close 左
2 p$ {: M+ C7 n之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 v7 K! ~9 S( O$ |( C3 FFilename: DSC01158.JPG! `9 k5 q: g4 Q/ n. ~2 C
Datetime | Downloaded by | Counts! ~7 k5 v/ H$ E
2008-01-18 00:25:24 | 阿感 | 2
) X% L4 \& o8 ~- u7 S# h" J+ Q2008-01-18 00:24:20 | playbr2 | 2
6 d0 X- z7 W/ R$ a$ }) }. c2008-01-18 00:22:02 | 但丁 | 2+ V. B5 ?. }; b& R5 j$ |

+ Q# c  w- ^# a+ h點解大家都down兩次? XD

6 ]( L+ ~( J) Q- U; K/ P& O9 o* Y( v; ~6 b
快d捉我錯處2 E9 v* I0 R% @) t7 x' \" N
話吾定我都打錯 + - 符號
9 g" o/ [( F7 E) ^, t) i  Y係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
% N+ L1 l  q( n( G8 f6 U不過,c=101n哥度(解除n係正整數的限制,只是整數)% {; J# _( F; S) A& W( q! J4 \
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~). x! f8 f) ?# J9 X) b
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
) P( G# W. d0 n  L$ r- A6 C/ J但原先是不知答案,所以唔知有無失根
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  H1 H& o/ R4 o2 @5 o* a有時見到題目都感到有點不爽
1 C+ n, T" V9 k( R1 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
" _' ~( W0 r# g: U) C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..... h, G+ C$ h6 G0 t& }- h( M

( I& f/ p$ i; m" B; b( l2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
6 H& S" T! c* k; y冇答案ga....
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/ _  O; @- P. W# D; H4 F" {" l% d) t# O2條equation solve 唔到3個unknown ga....

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! [# k; M5 t" ^+ C7 s- [agree
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& o# p7 g% P, b2 equations 2 unknows1 i/ [2 i, P" f8 y" o' `
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if 3 unknows there should be 3 equations - c8 B" j, U3 y* P
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make it simple % Y7 O7 ^" p5 y9 d% d7 O9 g0 E

6 `; \6 ~$ [, W2 @$ Usay
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! m, F6 t% I) s; I% Ta + b +c = 38 I; B3 A- L: s# v3 z# W( `+ Z1 E) J

" m3 x& @# U% `! La+b = 2
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then c is 1 4 b. Q3 ^+ N' X" B
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a = 2 - b $ e  F8 _$ [3 M( n  S! P2 o
( C* k2 ^- s# u, N, B
so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
. `" O+ m$ u. M9 k; P冇答案ga....& _. s( ?( o" M# h

8 k2 [- u( i" U2條equation solve 唔到3個unknown ga....

  |  v& m/ I+ z8 N, U0 [! z) R

! F  o+ Z- S. x此言差矣~
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, E  u3 T% m9 F+ L3 [2條equation solve 唔到3個unknown ga: q1 X7 s9 V+ I( e) o
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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
; e' ^" h8 s, o) P. U' d) U" O3 }! w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4 r9 O! h8 @5 ~0 ]; ?% @/ S

# o% V5 N1 O2 I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~)
2 D9 Y* P; V; q7 V7 h( Q: z0 R例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# s- A8 b; m" V; g有興趣就解解看, Z( H& J0 {: j7 B( X" ~( a7 B5 ~
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:( \3 v& g( Y/ H* B7 p* a

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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:7 S3 n' Z7 S8 I% K
捉錯處就唔敢當: q3 h4 ]: s7 E
不過,c=101n哥度(解...

; r* J1 F8 j" b  P& D9 y* R5 w) |2 @: @3 _' D3 v# g2 _# P7 S: l
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  o) @, X: U$ a9 r5 t; i
反而適當地調節一下 , 咁會理性好多; K2 E/ q0 `! R
就好似隻game 由12粒珠 加到13粒珠咁
5 R# G; W/ M3 I0 S# k: _* N當''堂''好玩哂- e' f; E: f! d
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:- l& O, F( G8 Y; e; F1 X

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p.s. 求''堂''字正寫...

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已是正寫吧