sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2, X7 X8 f( z7 S
2008-01-18 00:24:20 | playbr2 | 2+ c! x# I1 r6 l% x( I
2008-01-18 00:22:02 | 但丁 | 2
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- {. t  s# B9 F$ c點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
* C6 o- ?( ~& H# |: q1 LFilename: DSC01158.JPG
& e# l+ l! N/ LDatetime | Downloaded by | Counts
: A8 a6 M) j+ H2008-01-18 00:25:24 | 阿感 | 2
# C7 @1 E$ E( `* D4 }" `1 ^2008-01-18 00:24:20 | playbr2 | 2! Z& W1 t5 T4 @
2008-01-18 00:22:02 | 但丁 | 21 e' m9 e4 c* L5 Z7 _; o

5 r+ u1 j# v" b# [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  G3 w) m. |3 J) T
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:' H. H( n/ Q# b8 H" \  w
Filename: DSC01158.JPG
: B# @# M7 p4 n; c1 p% D7 FDatetime | Downloaded by | Counts
% q  G. ^0 f) e0 P2008-01-18 00:25:24 | 阿感 | 28 d2 k) K% {# E% p# p1 u
2008-01-18 00:24:20 | playbr2 | 23 n  W+ S6 Y7 e& Q3 r
2008-01-18 00:22:02 | 但丁 | 2
: _6 q8 v. z2 U5 l
0 I! z* [* I! u* Y' C點解大家都down兩次? XD

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快d捉我錯處% V6 [* f2 N4 p# t& [% x
話吾定我都打錯 + - 符號. Z7 Z) I5 g% f, l# p
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當6 w0 S7 r) B7 R* Q* X/ y$ T0 s
不過,c=101n哥度(解除n係正整數的限制,只是整數)6 w% O! P3 h1 b3 x2 I6 q# K
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~)
4 R1 {" \' Q( g8 w1 M4 w' `. g% ]知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題( P2 ^; Z* P; A. l( @+ x3 }
但原先是不知答案,所以唔知有無失根
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' V8 G& ^+ Q% G( u# a0 T有時見到題目都感到有點不爽6 v1 o* o! s8 W. Y+ v" p9 m
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
2 O0 ^; h; N  S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:
) z: ]8 r5 Z3 u4 j, R$ a" t冇答案ga....) M& z; w, S, b

& p5 V0 L3 i" a1 g* ]1 G) p2條equation solve 唔到3個unknown ga....

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agree
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- Q% t6 g- E$ O& j- [2 equations 2 unknows
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/ j5 `& k. {% H  u! Pif 3 unknows there should be 3 equations
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2 [5 u& m7 ~0 ^  p( f! L6 a! Lmake it simple
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say . o. J  x* M. E2 j9 S0 o

1 C1 z& x& u$ c( L& Za + b +c = 3
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a+b = 26 d6 z. J6 [1 t

; Q2 _* u, l, \then c is 1 9 h$ f# v* P4 h5 ^7 c& J" R! ^
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a = 2 - b
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so 0 = 0 3 m2 J( e. `2 P) q

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) h2 K  d2 J6 y- i
冇答案ga....( m) }+ {8 i9 Y6 V
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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
0 n/ T7 n( V" R. u# f還欠一個條件,就是3條equation都是linear independent(線性無關)的
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2 @/ M3 q) `, @0 W/ h7 M! X/ c簡單點說,多元一次方程就是線性方程的一個例子$ o& O! ^5 d, r+ A4 h2 r8 G# o- M
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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  d$ P& t1 v% b: f( i/ 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~)
  c( E( \. \  g6 N& ~% P: w例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
& j' M! j( A" {& W有興趣就解解看
% X! r5 e, m7 [不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:& |% v- l7 p# G0 k5 @7 M1 V

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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:
. @* f9 S- B9 Q6 `' Q9 C捉錯處就唔敢當( {5 k0 h; Y1 m  C: B
不過,c=101n哥度(解...

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( M& {0 v3 K6 C: E/ V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0 p6 U. `# U( j$ Z5 E
反而適當地調節一下 , 咁會理性好多' ]- [6 T2 Q. {7 [, j) U- U! k
就好似隻game 由12粒珠 加到13粒珠咁
+ R' r. `, N* e. V當''堂''好玩哂
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& }( V% q) A  M" \p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:$ B5 s4 Z& q% w* m: y. K
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p.s. 求''堂''字正寫...

( `! Z% m0 E) v* b( Z已是正寫吧