sakura310

Filename: DSC01158.JPG6 b, G. L" y) g  ~
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5 ~3 z! X8 d9 i2008-01-18 00:25:24 | 阿感 | 2
7 q7 Z1 o3 k% L& Z7 K2008-01-18 00:24:20 | playbr2 | 2( X. u0 z) t4 A2 l$ f" m
2008-01-18 00:22:02 | 但丁 | 29 i6 Q+ X& E- ^) e9 m: b

0 }; B( l& ?, a$ S" T' `點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:2 w7 h$ U" {; h6 Q& g. R
Filename: DSC01158.JPG
# S6 t3 t; v) h* y/ k2 h, N' JDatetime | Downloaded by | Counts' v( G9 ^. q. K+ C0 \+ W
2008-01-18 00:25:24 | 阿感 | 2
' g+ l$ w1 T( X( C7 n2008-01-18 00:24:20 | playbr2 | 2
2 W& x; P7 `1 g) I& R$ s- D$ V5 @2008-01-18 00:22:02 | 但丁 | 2- W5 _8 b6 k; `) e6 ?2 [
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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
( n. c$ _4 H# t" _  T) l之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
5 [. y, v4 Y, Z( o* l/ G3 _Filename: DSC01158.JPG
0 C( f! D, M( t( A8 a6 l, ^# B: G8 RDatetime | Downloaded by | Counts: L2 x; l, H, ?3 [2 M9 q: R
2008-01-18 00:25:24 | 阿感 | 2
  X* D) d1 A) Y( N5 V* k/ S2008-01-18 00:24:20 | playbr2 | 2
4 x$ L3 Z# c  x3 u6 t! L2 `. @2008-01-18 00:22:02 | 但丁 | 2) N: s* b$ t* T2 H/ J6 p: z* R9 l, ^9 R
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點解大家都down兩次? XD

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快d捉我錯處
  P2 F5 W. v( M話吾定我都打錯 + - 符號) W* s; b' H- w7 G9 \: T! U* ?
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
& A/ s6 |1 [2 c; E' p) K不過,c=101n哥度(解除n係正整數的限制,只是整數)3 E% r* l7 ?  \. R8 M$ 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~)3 \3 l/ H5 A( `/ v
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
$ s0 }" C6 t, Y" U- C1 T1 s: ^但原先是不知答案,所以唔知有無失根
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3 D3 C0 r. i6 A) M有時見到題目都感到有點不爽
) r; H5 A0 `. @  `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 }  X  t* C) r4 E( ~; f
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....
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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:+ o$ H0 R; J1 q4 U
冇答案ga....% A  X3 X0 t4 g+ _; \/ @

6 @2 R+ ^+ R% p$ S- `" Z2條equation solve 唔到3個unknown ga....

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agree 2 u) G6 q+ D6 \, q" Q+ @
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2 equations 2 unknows
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; P5 i) }: p3 O) h: Kif 3 unknows there should be 3 equations   Y; `; c' v6 U8 R

# [1 ~) v& Q* u' r2 S4 T# }3 emake it simple # d' e8 l5 C( {( b
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say
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a + b +c = 3
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a+b = 2
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% ]: A. C' M1 _' Tthen c is 1
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$ E* `" V1 E9 ?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:
2 C  ?& o6 R* q! I/ O冇答案ga....7 ^1 x; f% t, o& i8 L' a
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2條equation solve 唔到3個unknown ga....

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/ M( v$ h3 _  `此言差矣~
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2條equation solve 唔到3個unknown ga
- S. P0 C1 K/ ]; u. r' e還欠一個條件,就是3條equation都是linear independent(線性無關)的
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! c8 c: l8 i% I簡單點說,多元一次方程就是線性方程的一個例子! c: A2 L4 R4 w& s. S
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) H; W5 d, y8 ?! W0 ?
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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~)
! x) L% N2 v- T" B" g4 H' }4 S例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解) d8 V& x( q# I& O# H
有興趣就解解看
" v- a; q# Y1 C( d. m不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ B' {6 k6 g: ]# d

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- v" N7 D+ h, w: r% g( e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:/ \9 k: t) l9 y& U- K
捉錯處就唔敢當: a, G! A7 Y; T& E3 u! h+ m
不過,c=101n哥度(解...

( p4 W& J4 g0 `  _1 i; {; ?9 t2 Y" F0 `6 Z9 w2 c& ]
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
- e% v( c9 Z/ [+ }1 ~+ u/ O8 X反而適當地調節一下 , 咁會理性好多
/ f% V4 l* Y2 Q4 k. \+ r, v# X& N' Z就好似隻game 由12粒珠 加到13粒珠咁4 }7 H0 C0 ]9 s+ p
當''堂''好玩哂5 ~' Y+ [* `$ E: _
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:) `6 C( f5 m! z) s
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p.s. 求''堂''字正寫...

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已是正寫吧