sakura310

Filename: DSC01158.JPG6 c' T; ~" F( k9 h5 }# B7 L
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2008-01-18 00:25:24 | 阿感 | 2( ^2 b, H: b1 I5 O5 y/ ]
2008-01-18 00:24:20 | playbr2 | 2# u8 T3 }1 r7 _& T
2008-01-18 00:22:02 | 但丁 | 2( c1 F' w6 C) @9 {2 y$ g( C8 T2 R
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:& |: |6 u, N( V3 U: u
Filename: DSC01158.JPG
9 I8 s6 u  k0 d* L* f5 G* ^! KDatetime | Downloaded by | Counts
! r# t" L. N5 E6 \3 d! H1 K2008-01-18 00:25:24 | 阿感 | 2, `& @+ R& i# N) j
2008-01-18 00:24:20 | playbr2 | 2
& p/ l" Y6 t7 |2 q$ o2008-01-18 00:22:02 | 但丁 | 26 x% D: {' U- C' F0 e

+ |$ b5 B% l, K- l點解大家都down兩次? XD

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. `0 x* {& A7 M: q, L1 v' K我第一次開睇左2秒就close 左
! G1 v, o; k" Z' J, d之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
& X: t, s3 t1 S9 t* m/ P5 Z2 A5 }# rFilename: DSC01158.JPG4 m& Q3 V, D3 H
Datetime | Downloaded by | Counts8 S  p: \# I1 o
2008-01-18 00:25:24 | 阿感 | 2
' n8 G$ G: N! `( f" k6 Q" y3 J2008-01-18 00:24:20 | playbr2 | 2
+ z1 x5 e5 L" |3 `' `2008-01-18 00:22:02 | 但丁 | 2+ g( S" _+ L( \* @

$ `4 n7 L; [2 _2 i; P點解大家都down兩次? XD

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/ A" e$ h# \- X% G% v快d捉我錯處
7 c& E) S& ~9 |5 ~話吾定我都打錯 + - 符號
$ j2 d9 S$ x  @係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 t* E7 Z* f& e: i9 f. o; ~# N, r. h不過,c=101n哥度(解除n係正整數的限制,只是整數)
9 @, d# E; a4 s$ J3 Y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~)
6 q0 W" t# B- ^; A4 r/ y知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
" F; C* T  m! U. f但原先是不知答案,所以唔知有無失根
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; k3 T; F7 g4 ~$ U' |9 j) A" {7 s有時見到題目都感到有點不爽
/ ^. f( Z" z+ _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
/ ]% v1 B+ M) {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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! \' d  X# V( Q% \- k: p; @2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:; s/ F7 R9 X- o' ]  C1 W
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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) w+ k2 H# H7 P, l8 {4 ~agree
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2 equations 2 unknows
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4 x' G8 }% Z& d- n2 K0 N+ I) hif 3 unknows there should be 3 equations . |# d- N1 z* @, y" U% g* V
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make it simple
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say
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- ^3 c2 J5 a, q0 ]a + b +c = 30 {  V1 H; u5 X6 P+ u
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a+b = 2
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then c is 1 . l; e: x: b# J( k+ s5 Z
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a = 2 - b 7 C; _' p2 p' S6 F- f+ d( Q5 U

7 v$ j4 `  A% }! |8 mso 0 = 0 ' j. v# W/ S0 T

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
9 a/ X# g9 `! m6 u- d' `* q冇答案ga....) x& W4 s/ _8 b- {
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2條equation solve 唔到3個unknown ga....

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6 @) o8 ]6 T2 |# {1 @" Q& y此言差矣~
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' f5 g7 ^. n; m: u: }2條equation solve 唔到3個unknown ga
) u1 i. l" ~7 o( |2 D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* Y' \9 L0 i6 B8 e9 X
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
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/ R7 _. z# }! u& A1 p# G- o8 A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~)) I! Y2 A4 o. K7 @8 f7 M
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
5 B" P2 t+ {9 K8 K( p5 ?有興趣就解解看" H* L9 n. B! E! ?: o# z
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:( W. j0 a0 L$ f( g' M& K$ R
捉錯處就唔敢當% G0 \  j+ _+ C9 j0 b
不過,c=101n哥度(解...

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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" R$ m" p- ]! n6 |
反而適當地調節一下 , 咁會理性好多
' Q  [& ?" _+ M就好似隻game 由12粒珠 加到13粒珠咁
; t9 A* X& o5 v- x, m& I當''堂''好玩哂+ S" a; x2 g1 L/ B

- {2 O1 B3 D1 {p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

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已是正寫吧