sakura310

Filename: DSC01158.JPG# X2 F0 J9 F& b8 Y: u* q
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2008-01-18 00:25:24 | 阿感 | 27 C1 ~4 V2 F+ o% y0 z/ \% W& V' W
2008-01-18 00:24:20 | playbr2 | 2
8 W* _6 X7 I4 I, w6 y2008-01-18 00:22:02 | 但丁 | 2
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& P$ q3 `2 C2 ~0 }+ _# X點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:! y4 Z8 _$ R' X3 K. p. I# [0 f
Filename: DSC01158.JPG, ~* ^) ]5 T- ]
Datetime | Downloaded by | Counts
1 `+ y1 E, I$ M5 V- w2008-01-18 00:25:24 | 阿感 | 2
5 L+ r* t9 D5 Q' D2 n: {2008-01-18 00:24:20 | playbr2 | 2& N" P* J$ {  T& S
2008-01-18 00:22:02 | 但丁 | 2  W# `( e& K: C
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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
* A, q3 k' T; s3 m, ?% ~3 L4 V之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:; V3 k4 {0 Y, Z+ I# F
Filename: DSC01158.JPG  X. Y* _3 N1 }- d# Z% l0 \! n
Datetime | Downloaded by | Counts
" o# a$ ~, C: [. c2 J8 G2008-01-18 00:25:24 | 阿感 | 2
  ^, n) ]! C9 k9 g' ]# C2 L2008-01-18 00:24:20 | playbr2 | 2
3 {* T8 ~  a. [$ K2008-01-18 00:22:02 | 但丁 | 2
4 @- k% D; D7 U4 ~
4 b8 ^% K3 X+ w6 U點解大家都down兩次? XD

2 F6 @0 l: o# S2 d+ u/ j# S! n6 ~

6 L5 H) }' v4 Q) M0 g快d捉我錯處
" V& o# G: |$ {5 O# x4 x話吾定我都打錯 + - 符號
7 J. _" e1 P/ G/ n係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當) x- L" \% @. G" M, c$ z
不過,c=101n哥度(解除n係正整數的限制,只是整數)
; y" {0 [+ r8 p& A% T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~)
/ V3 C/ P$ y: x: j2 J知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
/ S3 N! Z" Y' b' T& \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
5 s  b2 _$ X% M! 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
0 |8 x' i3 P3 ?! n2 M0 T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...." w, U6 S2 N9 f% e

- p; F2 H" L& L7 N: S2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
; ]3 X; g& W. n冇答案ga....3 S# `+ `- i! p. Y+ s) B

- ?. L$ E7 A& D' V$ p) ?2條equation solve 唔到3個unknown ga....

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# a1 J% k0 e4 T# zagree
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) R6 M+ {# u  P3 {" s/ j8 K" @2 equations 2 unknows# v: W/ w% ^) ]# @8 `" o8 U

; b1 e* ]3 f3 Q" \( X- K4 F" j, Aif 3 unknows there should be 3 equations
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make it simple
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  q9 {6 b( f! K1 e# q  Ysay
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" o1 ~  N- u- O5 ia + b +c = 3. N9 t0 {) O' x- b1 ~- q

7 k  a+ [2 ?1 F, v" Y1 p' i! wa+b = 2+ z* O' W' A1 T$ E9 ^  N
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then c is 1 : U( Y3 ?' U1 `2 b7 r
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:7 h/ D* r0 O! \4 Q8 R. V
冇答案ga....( J: C% `+ Q" [" o
4 I1 F& L: e9 ^5 R8 g  S# h
2條equation solve 唔到3個unknown ga....

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  r! H' P2 p- ?# ?% e此言差矣~
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2條equation solve 唔到3個unknown ga# I8 A  [. m! P; K: a! q, p. f
還欠一個條件,就是3條equation都是linear independent(線性無關)的8 [! a& V% ~! C" L% I9 a

( D5 R* `3 p# W簡單點說,多元一次方程就是線性方程的一個例子
+ e# _0 E8 m- H; K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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1 b4 s, B. p6 U, P8 E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~)0 u) I* k) n1 G$ `6 P  R5 @
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解/ ^! K0 x& R) |, A
有興趣就解解看
$ E0 S4 z  o8 m" ^. w% u不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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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:4 e9 D% F/ R7 g6 [7 r
捉錯處就唔敢當0 ^: {7 K- H/ l) a6 {) x- c% x4 s
不過,c=101n哥度(解...

3 l& I  [2 z+ B; b. q, b& R. l" W% ~. f& o
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% g) O& |8 c; h0 o8 G  K3 F
反而適當地調節一下 , 咁會理性好多
, P7 f3 a4 b3 }4 u3 m  s就好似隻game 由12粒珠 加到13粒珠咁$ N% b, p9 g0 D4 ^  u1 W$ |! Q
當''堂''好玩哂  e; c% I) A* }
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

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已是正寫吧