sakura310

Filename: DSC01158.JPG
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8 [: ^; T' i( L# u& Y# a2008-01-18 00:25:24 | 阿感 | 2
  H- u, _# G: S4 ?' a2008-01-18 00:24:20 | playbr2 | 2: A' p5 j5 {. ~3 P( w
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:
' u% L* }1 q8 ~/ }; s4 _" [) \Filename: DSC01158.JPG
; |- S9 {* o" TDatetime | Downloaded by | Counts
$ n& {% l: Z0 d2008-01-18 00:25:24 | 阿感 | 2/ S$ e) B8 S4 `  p9 S" V) {
2008-01-18 00:24:20 | playbr2 | 2
0 K) V  Q& V8 ]5 I2008-01-18 00:22:02 | 但丁 | 2
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& ]; }( f+ `8 |8 j. \$ y點解大家都down兩次? XD

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; M2 V. p1 d2 @+ J我第一次開睇左2秒就close 左5 N  D9 ]- q4 W4 r. G
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:* L" v" L5 `$ e7 Q. G5 q
Filename: DSC01158.JPG8 _- @8 p- J) j- x; D0 G
Datetime | Downloaded by | Counts; F* l1 p4 M1 R# K6 `4 U' C
2008-01-18 00:25:24 | 阿感 | 2$ k" H6 T* n: H! f' @+ u9 z
2008-01-18 00:24:20 | playbr2 | 20 c: u0 h8 s; _
2008-01-18 00:22:02 | 但丁 | 2
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1 E# F* g/ d4 J0 l* S6 l點解大家都down兩次? XD

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# w+ K" x  L$ h3 M* y1 X& }( ]快d捉我錯處3 ~; w* |9 d5 m+ `4 P
話吾定我都打錯 + - 符號- s% n" `5 w- e) E
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當/ |2 t9 @3 C' r& z2 H7 X
不過,c=101n哥度(解除n係正整數的限制,只是整數)
; g* {# [* ]8 W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" U* V- w" U& e
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題2 b1 _5 Q& ]. E, d8 B
但原先是不知答案,所以唔知有無失根
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. ?8 _0 L% Y& q9 R9 {  F& f* K有時見到題目都感到有點不爽
  p# P0 P. J  p- A2 l2 k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
5 a4 ]3 k# K- L# G& Y; E) r0 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....3 y" M4 \0 T) o  t  `  z

( ~! {- _1 `' Q2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:7 v- P/ X: T, K2 A# X7 h( D2 a
冇答案ga....
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- d3 o3 h3 y$ L( f2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows, ]) s5 @0 n+ f( k8 S" ^, b

: q5 P% `* @+ ?/ X4 G, O) O/ a6 ^if 3 unknows there should be 3 equations & a% m) c; X; D9 q9 _9 _; i6 n

" ~- M& Q, }# `. a8 l3 F4 }make it simple * k( `, H, D. G/ T# h

$ @. [3 `, e5 O/ hsay & K* M3 O; ~. a) Z* t0 H

# i3 p' @, t7 x: C* D8 l( E, ^a + b +c = 3/ _  V0 I7 ]8 h5 Z, f* t& c: _) \

* ?3 L& _% B6 C3 za+b = 2# q! S2 r9 G1 v+ w- B4 w9 g( \
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then c is 1 . C5 |0 D' A% v- X. q

  \8 t, y: X, Va = 2 - b $ d0 X8 `) v5 `! q$ f) D: n6 a, `

) H! X: w, q/ i9 A5 h1 e% eso 0 = 0 ( n2 A9 F  u: w! K; ]

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:6 M, {7 U( v- a" n$ \7 T
冇答案ga....
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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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7 o) c  V5 B; m5 O; W2條equation solve 唔到3個unknown ga
, o4 o- o) [- c& O4 d0 e$ g還欠一個條件,就是3條equation都是linear independent(線性無關)的) n  ?% }' d* H+ m6 b) {7 t

# ^# C6 _* V: j簡單點說,多元一次方程就是線性方程的一個例子8 k3 A1 d: Q3 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  ~1 p7 M9 {' W6 @
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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~)
1 W% y( d" |/ E3 r9 P* N例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解. O- @/ ~/ k* J
有興趣就解解看
4 `, [8 @7 K; ?4 o不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ ^4 Q9 K: ?; E3 P2 y% F% T3 `

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3 z/ v7 s$ o5 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:( }# W. y  N6 o  v+ [% a; o
捉錯處就唔敢當: z) @$ z2 G% w' Z2 p9 s" n* Z
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$ h$ f2 E5 A7 E# C, T, o
反而適當地調節一下 , 咁會理性好多* M, M8 h0 H! v6 p/ S! Y/ c
就好似隻game 由12粒珠 加到13粒珠咁, H. v% @* O4 h
當''堂''好玩哂8 A* [! a& i, C0 L' L' @
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:3 ~0 N" v/ U$ z

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7 {  X) G; m4 I% ~1 y1 u3 gp.s. 求''堂''字正寫...

/ O  G( N% B; p; x% [/ Q已是正寫吧