sakura310

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2008-01-18 00:25:24 | 阿感 | 2: S4 e' K! h# r- f# q* k
2008-01-18 00:24:20 | playbr2 | 2
; s' w" I; {4 h2 s; }! C% w2008-01-18 00:22:02 | 但丁 | 2  w  f  ], K; d( o1 |* ?
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:) P% _0 ]: n: g$ n
Filename: DSC01158.JPG( i0 n3 b$ a$ Z1 _' b
Datetime | Downloaded by | Counts
% I; f3 v4 R+ V5 K4 _) d1 }2008-01-18 00:25:24 | 阿感 | 20 ~& c  ]+ S& @" C5 Y, e
2008-01-18 00:24:20 | playbr2 | 2" K& _- y6 \3 ^7 Q" A
2008-01-18 00:22:02 | 但丁 | 2# @9 Y: f0 v# C* B  j2 H

3 e& M) L1 c& [9 [8 T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
& G& D0 t7 J7 a0 o, D% Q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  ?; F* q/ H$ C( a6 z
Filename: DSC01158.JPG: E, |4 e/ `9 J7 o
Datetime | Downloaded by | Counts
9 y" y/ @8 a1 v5 ~8 n! [2008-01-18 00:25:24 | 阿感 | 2
7 Q- O0 i5 Z5 w$ P2008-01-18 00:24:20 | playbr2 | 22 I; {. K8 j5 }! G
2008-01-18 00:22:02 | 但丁 | 2
2 S2 W& g5 z9 p. I' J( h' s+ b
2 L+ l' f) P  {點解大家都down兩次? XD

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快d捉我錯處
' e" c2 k/ w0 o1 [; U+ {( c話吾定我都打錯 + - 符號7 W* \2 D4 F6 _( F8 v# L
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當. Q3 C, i, i5 U! |% J+ ^
不過,c=101n哥度(解除n係正整數的限制,只是整數)  z( k: m  K9 @! G- C1 o
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~)8 }+ ^7 m- F! y8 e
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
, k9 d( h% F  L' D2 \但原先是不知答案,所以唔知有無失根8 W: i: W% Z- k" K# O# ?

' x" O$ m% r9 W有時見到題目都感到有點不爽& M) X% N  }6 ?8 \' L! b4 a# F, h
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
! |9 J& ^* b; n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 l! Y5 G  q) o* m& O; T
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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:' |4 e& Z% F) J& v+ k  r! K. y# i
冇答案ga....; Y6 h1 P& z8 ^
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2條equation solve 唔到3個unknown ga....

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agree
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8 Z* K! O5 ?9 p6 `2 equations 2 unknows: I( ~: e+ C3 A2 B. t
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if 3 unknows there should be 3 equations
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7 ]) q/ i0 W3 S6 n' `- a3 [make it simple
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say
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a + b +c = 3
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9 |3 c2 ]6 D4 c4 q, s6 D; ~a+b = 20 z# @& P0 X; y" z' s# J+ a
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then c is 1 + r. H, t0 l5 F4 C1 N' w
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a = 2 - b $ Z8 q# _  Z  M4 D! H, V" u6 n9 d
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so 0 = 0 0 j: s( t2 f0 ^8 ^  R* I
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' B% }8 {' T6 l冇答案ga....$ j* I" L- ~. g; R. v
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2條equation solve 唔到3個unknown ga....

% [( b% F  m, f# H, d2 u1 r
$ {- Q; H3 G! L3 }2 N- ]此言差矣~
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! m5 ]+ m2 A6 W5 X3 @2 O* l2條equation solve 唔到3個unknown ga
$ V" d1 c8 {- b. a還欠一個條件,就是3條equation都是linear independent(線性無關)的# m3 O- ]& f4 Q% m5 I

- @; C: f3 V( f# ?簡單點說,多元一次方程就是線性方程的一個例子
9 X# `7 u3 d$ m9 E4 h" r" z* \' [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7 r6 h! s6 R+ [1 q( c+ L

% b0 N# O! r2 a  D4 t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~)
5 t% I" A" H% ~2 d例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解3 d+ G3 Q- S2 E8 \& h
有興趣就解解看
  E! H+ R$ h% }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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% V+ B2 t% ?9 N* f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:
/ G. q2 D3 z  G. c7 O) ]3 _捉錯處就唔敢當9 @8 W, d0 S. g% R6 Y$ O
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
4 Y6 S# ]& a: j0 Z. H反而適當地調節一下 , 咁會理性好多
- j# [/ U' E9 o  E  B+ b" r就好似隻game 由12粒珠 加到13粒珠咁
. m* y7 J  g' L: I6 j2 }當''堂''好玩哂( u" n% M5 \& [0 I/ \
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:3 Y, E- Q+ @5 k7 j, q" E

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5 W5 W, y$ y! K0 f0 Z% a5 sp.s. 求''堂''字正寫...

  f) E' a  g6 y. A- R) J/ v已是正寫吧