sakura310

Filename: DSC01158.JPG
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0 u9 K4 k' ~) @* W( C2008-01-18 00:25:24 | 阿感 | 2
/ v: M% L' Y" k  [( ^& y' ?8 B" l2008-01-18 00:24:20 | playbr2 | 2" E3 B+ B7 Q0 A$ h, h
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:0 C5 m( [1 P+ j; x& b, R# m8 ?8 J, j
Filename: DSC01158.JPG7 x8 k- z. F4 A) h1 @+ `$ O
Datetime | Downloaded by | Counts
# J8 m! J' ]$ H! u4 `) G2008-01-18 00:25:24 | 阿感 | 2# l! d/ K4 x$ `. D
2008-01-18 00:24:20 | playbr2 | 2/ q- \& ~- [1 ?; j% T
2008-01-18 00:22:02 | 但丁 | 2! B$ Z- Z0 V6 z5 K% h
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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
5 ^1 j' x6 S: t- L3 Y6 M之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:8 B4 F% p4 ?0 p, \  w  B2 b
Filename: DSC01158.JPG7 J) O, r9 C  O7 F, a  o
Datetime | Downloaded by | Counts9 m% {9 O! R, R, m3 e6 Z
2008-01-18 00:25:24 | 阿感 | 2
, |2 x' Z: Y8 w: u& G2008-01-18 00:24:20 | playbr2 | 2
8 q3 U& U# P. S/ g. c7 z2008-01-18 00:22:02 | 但丁 | 2
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3 \/ t6 h( l/ Q, U3 e. b9 G$ _點解大家都down兩次? XD

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快d捉我錯處$ \% o: `5 X# ~# m, y
話吾定我都打錯 + - 符號
/ G/ f2 z/ [" b; {9 I* w4 Z係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當: n, o1 s* p7 j& b. E! ^* T
不過,c=101n哥度(解除n係正整數的限制,只是整數)+ Q& `3 m+ Y) q0 k3 u( 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~)
" R% G6 O; e4 `* l2 _! v6 ^( `知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
! m0 ~0 p+ ]' O7 e: X5 M& l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
+ ^0 }# ?/ R1 e' ?  N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
7 `4 n- ~' G6 S2 Y8 z  P8 B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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; j  D4 v& W3 J/ M' H7 i2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:! b1 L7 S( x+ p5 ]: M
冇答案ga....
9 w* T- b) F* Q, z7 U0 q: v! N+ z" ]0 b
2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows. ?% I; a+ _" {# W1 ?
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if 3 unknows there should be 3 equations + G, |9 u& f" }* A

' ^3 W- j" G% P  T# j1 H; b1 T/ ymake it simple : K& I% ?+ }* x, y
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say
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a + b +c = 3
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a+b = 2
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( I: I0 c/ v3 }then c is 1 2 U# f1 X8 l; Q
1 ^+ f+ T3 {2 l+ F$ t" j
a = 2 - b
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so 0 = 0 , t6 {4 G- z7 p+ F/ z8 ?

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
* J9 e1 e/ l9 }* [6 i" f* m冇答案ga...., }2 F0 C3 c2 H" [; O7 n/ b
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2條equation solve 唔到3個unknown ga....

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- N& G" P* f  B, v; L* l此言差矣~
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* Z4 H$ \1 |; F9 p2條equation solve 唔到3個unknown ga
, P; y, ^0 q; M4 H# @7 K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
2 n2 y, r8 B5 {) O# V. t! F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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5 o  u' b0 z0 N" f$ Q/ ?4 a( g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~)
! G1 m; n  Z9 k( V" O, a例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
+ g# F' \/ F" G/ d0 I% ?有興趣就解解看7 A; ]; x/ r' i& A7 E$ J# u  T
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# m9 I7 ?4 ?) ], e
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7 \1 @$ z* ]" E: }' r3 \6 |; I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:4 m2 a% [( }4 J: Z* O4 d
捉錯處就唔敢當
* }" k. j" h: @0 s# n  c' j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. d/ J  L7 ~% r$ M" x8 H1 O
反而適當地調節一下 , 咁會理性好多' z0 e5 R* X  C5 O$ s. c
就好似隻game 由12粒珠 加到13粒珠咁/ L6 U+ O( P! l
當''堂''好玩哂
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7 j5 N' E1 n* xp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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9 O6 m! `" _& Rp.s. 求''堂''字正寫...

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已是正寫吧