sakura310

Filename: DSC01158.JPG& ]* |' H# d) o2 t; g8 K7 V. c
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2 I3 ~& B3 _. P; V2008-01-18 00:25:24 | 阿感 | 2
0 y6 s& }. W/ s  b4 |- P7 A2008-01-18 00:24:20 | playbr2 | 2: T  e7 x  S0 \; V. {8 P
2008-01-18 00:22:02 | 但丁 | 2# g/ ^% r- x3 S4 M& B6 }$ G

7 N1 k3 o, J8 l) m! S% F. V點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:% w& o/ \% |2 d( }* i4 J
Filename: DSC01158.JPG
4 A- a5 v* T6 A1 O1 uDatetime | Downloaded by | Counts; n0 |/ U/ @% c6 h* P9 Q, f+ \6 ^1 [
2008-01-18 00:25:24 | 阿感 | 2# o% w2 J( Z! S) Y
2008-01-18 00:24:20 | playbr2 | 2
% m4 R' P  R: V. r" H; s" P3 g2008-01-18 00:22:02 | 但丁 | 21 [% L7 {4 v9 ^' r
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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
: n+ v- O' D8 w之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:0 b; |! e. w7 ~8 y2 e- F: M
Filename: DSC01158.JPG3 W5 f4 j* U6 Z! T; R* x8 w
Datetime | Downloaded by | Counts
7 W  S" x4 d9 M* ?! a- U1 ^% l2008-01-18 00:25:24 | 阿感 | 2
) _2 F7 O' }& P/ b/ @2008-01-18 00:24:20 | playbr2 | 2
1 n7 t2 B5 F. L4 E2008-01-18 00:22:02 | 但丁 | 2/ n2 m/ b7 A& b1 A- r$ \$ E3 ]
2 [$ |0 y1 f/ `
點解大家都down兩次? XD

$ @% T5 |& s3 J' \
8 e* C7 U; j$ X: v快d捉我錯處
9 L2 L" L' I1 X# [! x話吾定我都打錯 + - 符號( `* P) k$ [; A3 v: r
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當* }! K/ `8 }8 c: g7 R
不過,c=101n哥度(解除n係正整數的限制,只是整數)
- [* d: X% |' s; U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~)
5 a* S) e! s  l! o! ^2 I9 R* u知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
* s0 g4 k8 m% w$ c但原先是不知答案,所以唔知有無失根  b( r0 v; p. C% U! A  J

0 A! |, T5 i" p  f) z* |- [有時見到題目都感到有點不爽' f; N  }8 i, _: @, `: T& ?  `& ]
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- w5 X* D. |6 Z3 g2 s2 k* e$ t
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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: v: }/ {  k* w2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
1 y# Y6 ^- `' d, L2 \$ U冇答案ga....
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$ k- v2 A' S- Q2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows' i# s# x, L! g* e5 q* S. [, F8 j5 W

* d0 A3 F+ G4 u2 V3 ]if 3 unknows there should be 3 equations
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make it simple 9 A# l- {; I. O- z, p
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say
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a + b +c = 3
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a+b = 28 g+ u( k# h* l* @: m7 `8 {4 l

  f& @$ K% S5 Lthen c is 1
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a = 2 - b 1 e/ D* @2 `& i

; u7 l- U& U2 t! E- M" Yso 0 = 0 3 K' e# G3 b" R: @# H

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
6 M+ H" h+ m" l冇答案ga....
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( K, c' Y. `; x8 E4 _" ^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
" U" M* r7 H" ^% {3 x  q$ Z3 H3 S還欠一個條件,就是3條equation都是linear independent(線性無關)的
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8 t8 E' O. `) R2 t. @+ s7 h# f; l8 i+ W簡單點說,多元一次方程就是線性方程的一個例子5 i$ b( _: d3 r- m( W0 V0 a
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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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~)
; L8 P  F% w9 ]( ?+ x' o例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解: O2 `5 X7 {+ z" ~' s* k3 w
有興趣就解解看
. v+ ]1 I+ M! N1 l- S不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:8 T5 ]% D4 d  Z# K& @# x0 ?6 T6 c) \- O
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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:
* ^" G4 ^! b. q8 ?捉錯處就唔敢當& n) |8 L7 C. N/ ]
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9 R% p# Z5 Z8 x" W! n
反而適當地調節一下 , 咁會理性好多: N- J: B! k! z" V; O: p, Y
就好似隻game 由12粒珠 加到13粒珠咁
7 ]( I: E+ m3 l當''堂''好玩哂
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" J2 C8 u# W. P  Fp.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