sakura310

Filename: DSC01158.JPG
; {9 q1 u2 w( z: K; O+ vDatetime | Downloaded by | Counts2 f% p' N1 \( v/ v$ W
2008-01-18 00:25:24 | 阿感 | 2
. @  V( x9 O7 @/ s" `: x2008-01-18 00:24:20 | playbr2 | 2, L* p5 E% I3 w# G3 E) ^, O0 H
2008-01-18 00:22:02 | 但丁 | 2
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6 h4 W& y9 }; @5 i3 l$ ?* P點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
5 r' Z7 b- z# n1 U, t2 u- WFilename: DSC01158.JPG# ?6 B) _* `4 u
Datetime | Downloaded by | Counts
# N5 v& {4 i) y7 m. S7 ^2008-01-18 00:25:24 | 阿感 | 2) t: Z4 R1 x( N$ x
2008-01-18 00:24:20 | playbr2 | 2
: A, I+ E2 F3 Z; t2008-01-18 00:22:02 | 但丁 | 2
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9 F2 y7 |, z' U1 v: M+ b+ i點解大家都down兩次? XD

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0 X9 K5 c$ x: e0 |; x我第一次開睇左2秒就close 左
+ _7 p$ E- ^1 k" M' f) e之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:* [( m. I3 t. s4 N  c
Filename: DSC01158.JPG3 E% r( \" D3 v) o& Q+ Y: D* T
Datetime | Downloaded by | Counts  P( k% }1 t. s  h0 w
2008-01-18 00:25:24 | 阿感 | 2
5 W# L! C; f! o8 w2008-01-18 00:24:20 | playbr2 | 2  f* ~( z) B* ?0 o
2008-01-18 00:22:02 | 但丁 | 2
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3 m( Z5 v: U8 j點解大家都down兩次? XD

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% m+ N( w; ~! Y快d捉我錯處
$ v# x* K0 E1 _8 H; K話吾定我都打錯 + - 符號
7 g0 o; E; e1 ^$ y) W係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
/ I' ~- G5 f' c; m' L3 j, Y2 b% s不過,c=101n哥度(解除n係正整數的限制,只是整數)" k6 e! Y! S4 Y1 @8 k2 I
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~)
' O$ H8 ?6 T# h+ E" I& w9 {知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題0 o9 n+ k4 \& P& P# z9 \  {
但原先是不知答案,所以唔知有無失根, S# z. D+ X! S. Z( e

2 d- o6 Y$ a' M: u) M0 I$ G有時見到題目都感到有點不爽4 u* j- x" j6 W2 Z
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 B& S+ Z4 Z) Q' w8 B8 e% \. {
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....8 O$ i# ^' d5 R; G+ ]
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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:' z) R5 l( D" k
冇答案ga....# K  m! g" Z  t

* j" Q0 Q0 i/ }7 r8 M4 c2條equation solve 唔到3個unknown ga....

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  `3 A; e& y# ~, }8 E: vagree
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9 {8 j' u% K$ `3 u2 equations 2 unknows/ z8 O( K! ~* }6 K/ _( u6 C
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if 3 unknows there should be 3 equations 3 p' t, i$ ?, S9 j0 s8 l

$ e$ P) q; u! O) Tmake it simple
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6 l, o; B0 O6 f' \8 D" ]say / j4 o) ]$ o4 u7 {( J9 J9 u0 \

) z3 o# v% j: p  @4 H* Aa + b +c = 3; d; s% F3 W. m2 S1 T$ G

3 r5 Y, K, q% n" x/ t0 [' ?9 l; d& Ba+b = 2
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* ]' ]- _+ H  B5 ~then c is 1 % B. i3 K' I4 m0 W; b- `

; E0 f( H' V0 `$ W: ra = 2 - b
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, F8 _! i) X9 A1 a# [2 Hso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
9 u2 m! l* P; f( n冇答案ga....* I" j3 w" K8 f2 z5 Q$ d

' N) E9 Z' h; d7 g, X* L2條equation solve 唔到3個unknown ga....

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' A$ D7 O3 l5 M1 O7 G此言差矣~
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/ E- g) c: R* i% I) H+ x: G2條equation solve 唔到3個unknown ga
& v- r7 P3 T$ y# J$ U還欠一個條件,就是3條equation都是linear independent(線性無關)的
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. l5 p: N9 _# @' E; D( U) S/ F* F簡單點說,多元一次方程就是線性方程的一個例子
4 H3 h- ?% o/ g) ^$ u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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- C1 q; h( M# x5 X5 a2 x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~)( ~/ [, @4 ~* n: b; G6 v$ o( \" R
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解1 ]1 l9 J# [; N6 p% K- a/ _4 h/ E- z6 D
有興趣就解解看& B" E/ p5 i" j9 ~# R2 D. `
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:
7 a) B, ?7 M# `% r9 J$ [. F4 M* Y捉錯處就唔敢當# Y8 A/ o0 ^& z: Q2 \+ R9 @4 Q
不過,c=101n哥度(解...

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& d5 D+ ?2 F/ ?' j# z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
3 W% p6 v0 ^5 o, o! f# }/ P反而適當地調節一下 , 咁會理性好多
- u. I8 J( `0 Q# s( l就好似隻game 由12粒珠 加到13粒珠咁
9 z  {! i, w/ [3 g當''堂''好玩哂
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5 U5 r' O: j5 G1 c9 g3 S& q' Wp.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