sakura310

Filename: DSC01158.JPG
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+ a  r4 j. r4 x! O# c2008-01-18 00:25:24 | 阿感 | 24 {4 ]9 V+ M' ]. w; N- y
2008-01-18 00:24:20 | playbr2 | 23 m5 [& d% D1 ~' p
2008-01-18 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:
  O$ V7 M0 ]  a, u3 N+ f6 h6 uFilename: DSC01158.JPG
  ]- d: H! H5 Z/ k- r& ?( pDatetime | Downloaded by | Counts2 w$ T, d1 `) W; H9 ?5 B6 E
2008-01-18 00:25:24 | 阿感 | 21 k2 Z9 V8 f! \3 t
2008-01-18 00:24:20 | playbr2 | 2
5 i. h! b) _9 A1 a9 \, O  W2008-01-18 00:22:02 | 但丁 | 2$ n; t4 ]7 e# A# }( \& W" R( c

+ r0 a4 W" N+ @4 R) q* v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
6 t% \7 m1 B6 X4 X1 ^, r之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:& D  O+ H0 p- ], j
Filename: DSC01158.JPG
* V9 ^9 k' ^! N, ~/ O9 m# S7 vDatetime | Downloaded by | Counts) x( k. ~8 g# d+ W
2008-01-18 00:25:24 | 阿感 | 21 z* X" l1 n' K, a
2008-01-18 00:24:20 | playbr2 | 2$ t$ i2 b. U; \$ t1 o; h7 Q5 r
2008-01-18 00:22:02 | 但丁 | 2$ E1 w* a# Y1 i( u5 x
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點解大家都down兩次? XD

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* s$ P) r( r' ^快d捉我錯處4 u' Y3 Q1 ~1 ]" E8 z/ C
話吾定我都打錯 + - 符號
$ D2 F/ {3 F9 i3 q; N6 ~係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
( K, L. k7 B; @: ]/ Y( W3 L6 o) Z不過,c=101n哥度(解除n係正整數的限制,只是整數)
8 s8 V( B% r4 ]: C' V7 m, l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~)1 n8 \2 O' T( N5 F) I' W
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題8 v# T! g5 ]. l7 J8 A- w) Y; J: I
但原先是不知答案,所以唔知有無失根9 X+ D+ \0 j( L

6 W$ P4 L9 K& s9 a  w- q有時見到題目都感到有點不爽
, a  ?- j7 u. L* V0 a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& G# ^: s' q6 J, {/ y# E
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:
2 y% D$ _$ r- w% h7 [! x冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree ! r2 y" X- v+ V$ o# r5 E/ V  G

, m4 Y: r" ~  e& g% h- `2 equations 2 unknows
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/ z8 b/ {8 Z2 a2 Z! y: Vif 3 unknows there should be 3 equations
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make it simple
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# y7 h2 _3 e, q7 _, ]+ Asay
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' g% _! `+ R! q# ^a + b +c = 3
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# x' _# `, N/ p; _( v- Z2 Wa+b = 2
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then c is 1 6 W4 ^8 K% D  W6 R( t
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a = 2 - b
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2 ^0 [' P. t1 H; Z0 c; H# Y2 l) Oso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
, J$ Q; R3 C' W冇答案ga....
' g+ r: \/ [) w+ Z0 {8 }4 z6 B& N! l* P/ ?7 \- c! g; y
2條equation solve 唔到3個unknown ga....

2 g: s4 K3 J" h/ H

: k8 h9 e( I7 \+ h; `$ f# x. R此言差矣~
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2條equation solve 唔到3個unknown ga5 O( ~& d+ f: L- N3 ~
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 d4 l# h: k& G% l; `. K- }7 l簡單點說,多元一次方程就是線性方程的一個例子
7 k0 [9 Y, R: h0 G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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; q' ?2 w) M' T5 f% u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~)
& {/ U9 h! k% |+ D9 `& h$ Y例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
" r1 R& {3 R& e/ v有興趣就解解看
, |( ]) s$ _& K不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:% S3 E5 p) k7 X
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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:
- r7 Z$ e. y6 N( w( {4 W捉錯處就唔敢當
( n% v9 u0 O7 b  |* Q: ?5 O不過,c=101n哥度(解...

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/ F, Q2 I1 A3 H  {- x0 @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
, n  p  L! Q  }反而適當地調節一下 , 咁會理性好多; c8 ]/ A# f9 T8 c9 Q, G
就好似隻game 由12粒珠 加到13粒珠咁
" X+ {1 l1 b& l  o! `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:/ |1 j4 o3 }6 o

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p.s. 求''堂''字正寫...

2 |6 k$ \( Y3 ?1 s; M已是正寫吧