sakura310

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. @- ]5 N( c7 M+ I  _! Z2 Y2008-01-18 00:25:24 | 阿感 | 2% u5 Z% F5 r; i) N$ z
2008-01-18 00:24:20 | playbr2 | 2) h# E4 c4 S, w: @
2008-01-18 00:22:02 | 但丁 | 2( k' \7 _0 E/ w$ v
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:; @3 E* P% D- H2 h" p1 X
Filename: DSC01158.JPG9 f5 W  G6 r. }! D9 |6 X" x& _
Datetime | Downloaded by | Counts
$ {& h: Q! z& \2008-01-18 00:25:24 | 阿感 | 2
0 F( ?2 `7 {! N2008-01-18 00:24:20 | playbr2 | 29 x. f8 X$ k4 t. d4 Q+ W
2008-01-18 00:22:02 | 但丁 | 2
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4 j  C6 @( x# O. _) ^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  a  t: i0 \, @! T: G之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:+ J; o" ^0 H6 F( q" ?% l
Filename: DSC01158.JPG
) |& P( ?9 v! JDatetime | Downloaded by | Counts
% i7 O" |' x$ V! S- I- m2008-01-18 00:25:24 | 阿感 | 2
4 O) R& j7 b: `2 i  Z, L2008-01-18 00:24:20 | playbr2 | 2
1 D. ^/ m' L' j' K5 u2008-01-18 00:22:02 | 但丁 | 2
5 T& `  w5 {0 q  J/ [6 `: \/ ]/ E# B9 B- l+ @1 Q% v5 H. i( i$ f, d
點解大家都down兩次? XD

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) X: W0 a- M: \8 t  p6 U& }* k快d捉我錯處
  v4 F, K! V; i  [話吾定我都打錯 + - 符號0 s6 i' Y% R+ _% j9 ?
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當4 w9 f3 _0 b; d- C- h) e
不過,c=101n哥度(解除n係正整數的限制,只是整數)+ e/ T, u8 f# n$ O2 z
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~)
3 a+ ^; ]# s- u6 B. D8 j0 s& o知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
6 c6 M3 ]- H  k: ~! d, K! }$ Z; Z5 l但原先是不知答案,所以唔知有無失根! G0 P5 ~7 h8 e: Q9 {) W

! l* w- m1 F$ a0 [$ h, c* l有時見到題目都感到有點不爽
6 h, \1 N. [9 V; K7 T8 G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
% r3 {. ?  ~% {. Y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...." j* ?. @$ b1 `+ Y& B# r

# p: L4 K& T( b) g2 X2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:, d4 v; ~$ o. u; L8 N. ~& U& u
冇答案ga....( S# N" V  E5 x8 `

0 z6 U3 {; }* H2條equation solve 唔到3個unknown ga....

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- c) I! X! X- m! }1 ^+ I5 u4 F2 equations 2 unknows
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if 3 unknows there should be 3 equations # ?9 V' {! s, W0 d* U5 k  i
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make it simple
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say $ u8 F9 P) z3 U- ~3 }/ b0 K

. Y8 i1 }) V$ k' Y( U6 O( ca + b +c = 3
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a+b = 2. v+ g+ X3 N: g  t$ [

- N+ n6 b. d' C# f/ e) ~& @then c is 1
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a = 2 - b
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so 0 = 0 7 j( v2 F0 J: l7 w

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:8 s5 I3 B$ R: N- c- H9 {9 b! ^
冇答案ga....
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  i# F1 j6 E! W, S: A% ]+ c2條equation solve 唔到3個unknown ga....

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0 o+ v! L' C2 n( `+ A, d$ v6 m4 k" E0 }此言差矣~
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2條equation solve 唔到3個unknown ga
& O& |4 f0 P1 x) U5 d! B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
* {# Z" u) v) 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! a/ v6 t8 s5 U  w
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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~): {' y5 i. z2 ^! a
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
5 A; S" u+ U, b( D- F6 u" o有興趣就解解看( Y$ |; @6 d9 E& W
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# r. p) i  J: }. ]( g1 s8 l# n
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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:
, c9 \( C% ^: Y  z( _% q捉錯處就唔敢當; |% m, k' {: O* g; ~  K. D
不過,c=101n哥度(解...

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7 C7 H7 M6 b3 j, T9 w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
! L, q9 T, P8 z' M9 g& B9 q3 a0 m% H% B反而適當地調節一下 , 咁會理性好多5 D& l* n0 O2 c% k
就好似隻game 由12粒珠 加到13粒珠咁2 V1 e2 n, I+ @* I% Z0 Q  \
當''堂''好玩哂
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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