sakura310

Filename: DSC01158.JPG7 H' R- e- w& }0 p3 i2 J
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6 h( M% D. R! ~: B/ \* z2008-01-18 00:25:24 | 阿感 | 2' k2 C2 m! }0 }2 |- {$ d
2008-01-18 00:24:20 | playbr2 | 2: n) u1 A6 W% K! S$ x/ ?+ A) `( q
2008-01-18 00:22:02 | 但丁 | 2/ D1 M+ D5 `4 L, l
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:; Y: U' A- n  P: d
Filename: DSC01158.JPG( P0 s" B$ {9 v5 P6 H$ `6 t' F  s
Datetime | Downloaded by | Counts
7 Z& Q, l% ~9 u( i2008-01-18 00:25:24 | 阿感 | 2, ]8 C0 g3 S7 @: g5 B
2008-01-18 00:24:20 | playbr2 | 2
5 y. n  {% g9 U: a! B; y2008-01-18 00:22:02 | 但丁 | 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
3 ]) x& }: H+ J9 W之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
0 E5 z# A* T* T/ r1 {Filename: DSC01158.JPG; _& G# l% ^/ v6 G- b  D
Datetime | Downloaded by | Counts
1 G$ B4 H# V' E3 _3 }2008-01-18 00:25:24 | 阿感 | 2
1 z% a. z  b4 x  J  P- P2008-01-18 00:24:20 | playbr2 | 2
% J9 J) c3 K! o. O' J2008-01-18 00:22:02 | 但丁 | 2; u7 c; b0 \. e! N% d, E( s
/ q+ w! L3 O, i! r; g
點解大家都down兩次? XD

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快d捉我錯處
" [  l5 @7 ^, Z" j" u- i話吾定我都打錯 + - 符號
' b  Q' ^4 I# ?# m# K- J# N. Y係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
5 D$ ~% {3 V. _5 O' \/ F不過,c=101n哥度(解除n係正整數的限制,只是整數)
6 S$ H" }/ y7 ?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~)5 I% O! g0 s, m2 S/ N1 H) e
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
' T* u$ s- Q% M' D: m% @6 @但原先是不知答案,所以唔知有無失根; y$ J2 @# L6 V. i* N  b

( G( P% X- v7 u) Y  @3 d9 x有時見到題目都感到有點不爽
% A4 j4 |! |* P' O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
; R; w" l; ?1 J! E9 w/ G6 x% @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....) A' ?  f0 W  Y/ L! }: }# N+ E
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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:
9 z  B5 P& |' E0 Y. f$ i5 R0 U冇答案ga....
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2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows
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9 h2 [" ~' Y" s+ J9 W- D+ m% u) eif 3 unknows there should be 3 equations 9 j2 G4 z  H) n1 c. Q% [

. I& }; H# O- n: V. B0 amake it simple
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) B( H+ c. {# c! g+ Aa + b +c = 3, n' q9 g  @8 _
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a+b = 2# P* J7 [" M7 h% N8 f

! [6 L6 ^. K# ~. O2 Hthen c is 1 $ M3 ^5 p3 z- i

' _# e, w7 ]3 ?; J: N' ^a = 2 - b
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% [+ z8 `3 j* c; ^so 0 = 0 " C) y. U1 }; v; G9 C1 o
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:. _! n0 G; r; S: c8 T
冇答案ga....( k! f2 B2 g# V3 _. Y4 i8 A
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2條equation solve 唔到3個unknown ga....

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7 T% N# R* ]) w, Q  Q此言差矣~" \# q/ ~2 }1 Q4 r
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2條equation solve 唔到3個unknown ga+ c7 B+ U8 l0 C- F/ j' f* A3 a/ L9 ~
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
5 Y$ F4 i3 O$ a* f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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& _! c+ s1 h( S  {; t' ^: Q: Z( ?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~)  C5 `- }: Z4 A1 E2 \- M. o1 H
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解. S3 Q- d2 b1 O0 r5 V
有興趣就解解看
" r5 g8 a6 ^. z) }, }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:! k/ l" i" }+ N
捉錯處就唔敢當5 v! c& o6 Q: i0 s3 Q
不過,c=101n哥度(解...

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; i% W0 N  n9 O) Q. \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1 g- m7 n& _' N% z
反而適當地調節一下 , 咁會理性好多, M- |6 h6 `1 j5 ^! q. F9 `; z/ B
就好似隻game 由12粒珠 加到13粒珠咁9 P( `# B1 @; n9 ~6 p4 B4 @) n
當''堂''好玩哂
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2 E' I& Q9 ~  T' M0 e" @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...

2 \& m+ h# [1 i) n8 F7 k已是正寫吧