sakura310

Filename: DSC01158.JPG
7 O) R# d  h, z& b1 {- ?: Y, iDatetime | Downloaded by | Counts
+ \0 @" e7 U. h6 N, k2 }$ }2008-01-18 00:25:24 | 阿感 | 26 U( a' s% ]9 W1 g! `) ]
2008-01-18 00:24:20 | playbr2 | 22 O% N: m' b; ]# M" D
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:
2 m  m: c+ c5 eFilename: DSC01158.JPG
6 y' h) i3 o4 e' w- IDatetime | Downloaded by | Counts
( y* S9 f. }8 |2008-01-18 00:25:24 | 阿感 | 2
2 z7 }9 S/ s: [; ^7 u4 S4 S) f2008-01-18 00:24:20 | playbr2 | 24 T0 Y' t; `' E2 d, Z# @
2008-01-18 00:22:02 | 但丁 | 2+ I( {( R1 ]3 c; j# l; _

* {: R$ I/ x3 m) N9 P  G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# @5 m' Y1 {7 N! K
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* u% r: a/ m0 Q, Y  J1 T/ jFilename: DSC01158.JPG
8 w) @+ j/ `* X. s. {Datetime | Downloaded by | Counts
# ?3 W0 c5 y( W2008-01-18 00:25:24 | 阿感 | 2$ x4 b+ |! Q- S& n
2008-01-18 00:24:20 | playbr2 | 2  z7 u5 V; f7 h" M- ]8 {& L5 l3 f5 Z) G
2008-01-18 00:22:02 | 但丁 | 2
6 P# h( e0 X; C2 @8 Z7 [* L' F
. P, h0 q9 u" L0 v點解大家都down兩次? XD

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快d捉我錯處
( `1 J9 u9 y+ m" Y" Y" p# x話吾定我都打錯 + - 符號" }$ `8 @/ `8 Z: r$ a
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
7 s2 M* m+ M$ p4 G/ q% ^不過,c=101n哥度(解除n係正整數的限制,只是整數)
' i5 t& ?: F9 ?7 ~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~)
2 d9 e, n/ L/ w% Y4 ^! k, E知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
. }6 h  n& z$ h" W3 E& ~但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
* W( k0 Y" x( y) 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
! z1 g# W( g9 @  x4 e9 f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....2 {8 t4 o! j9 t  i
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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:( S! A& `* |# w4 i6 K
冇答案ga....) E8 x6 ?* I# P$ @

% H3 ?3 o& a8 j+ ?: E8 N- i' E2條equation solve 唔到3個unknown ga....

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* P$ U8 e7 i- T4 fagree
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2 equations 2 unknows9 |- i# t8 Z! R' S

% [# G1 t* z) s* \1 v2 ?if 3 unknows there should be 3 equations ' R7 V4 {  @9 D( Y
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make it simple . _0 [; g7 K: y  ~0 q5 U' U
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say 6 k# p/ l! Q+ [3 R7 q* s
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a + b +c = 3& Y$ F$ X9 j3 @9 I: o9 l
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a+b = 2
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2 Y# J, C$ s  Q% h2 mthen c is 1
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" x0 j' J9 x+ ta = 2 - b 7 y9 \" |$ [5 Q: {( l7 x) o7 x; m
! ~+ x+ }# u- k5 S6 o0 W% W! I0 b
so 0 = 0 ; G8 T8 b( S" M( ^
1 ]: V; x; x; U. m- i

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:$ @1 b/ z5 ?$ B+ X/ J( R0 j
冇答案ga....
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* g! Q' @. z, D2條equation solve 唔到3個unknown ga....

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此言差矣~. W( ?3 {" D# H8 l
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2條equation solve 唔到3個unknown ga/ X" G8 Z, v2 W# z- y# E" X
還欠一個條件,就是3條equation都是linear independent(線性無關)的5 {( [0 P/ U$ v% l: v

9 Y% i  _& R$ @$ i簡單點說,多元一次方程就是線性方程的一個例子
6 m( z) [, x6 Y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  n+ h- u5 {6 Z0 A: o+ {

& E; g- Z0 f, N. U2 B* J1 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~)
% T3 E% M/ b+ M* K例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解6 C  P) f1 V% P. z1 q  c
有興趣就解解看+ r' v% ?; Y/ D8 }( \  @. U
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:9 f0 `9 Q: q5 N1 K' I" ^
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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:
' ^$ h4 C/ U3 M) `% V- [5 z捉錯處就唔敢當, i7 G% J, R5 [3 W5 `' f, q
不過,c=101n哥度(解...

# ?5 x4 r& P9 ?% m& T5 {; r6 j8 R
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
, `: M+ r: g3 z/ M6 Z' x' F! o2 E反而適當地調節一下 , 咁會理性好多( p" |6 P9 F! I9 o6 D* M$ F/ D
就好似隻game 由12粒珠 加到13粒珠咁( x+ r+ K2 m/ _) E  s% e
當''堂''好玩哂
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: `3 p* M2 @; Y% v- x, M: z$ Yp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:- G) h0 X2 ?" M  ?! v; W3 V. F
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p.s. 求''堂''字正寫...

1 G6 l7 W! {" Y" q已是正寫吧