sakura310

Filename: DSC01158.JPG* g5 b5 K$ P0 b( w. \* h
Datetime | Downloaded by | Counts6 k; z3 L) d: y9 l) e' i- s
2008-01-18 00:25:24 | 阿感 | 2
" s0 Z! |0 I" m* g7 _! T; [2008-01-18 00:24:20 | playbr2 | 2
; M: K$ t2 P/ _, s# s) W2008-01-18 00:22:02 | 但丁 | 2
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/ ]4 c( W0 I/ ?- _% s- Y5 W4 L1 D9 {點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:" n! X# o5 u/ f* k9 ]
Filename: DSC01158.JPG. }$ ]' c, r& t6 Y' R& Y  R4 m
Datetime | Downloaded by | Counts
0 Z2 d$ A, y/ M0 k7 M" {% A2008-01-18 00:25:24 | 阿感 | 2
& I. I- M- O6 d4 d9 {$ Y2008-01-18 00:24:20 | playbr2 | 2
  G4 D4 ~; u3 `3 |& Z8 O- G2008-01-18 00:22:02 | 但丁 | 2& R! q% ^  D  \. B. K( R* k$ h- M, m
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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
1 t# o3 v" A7 @5 y6 b之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, c9 h$ ~7 g% r
Filename: DSC01158.JPG
1 G6 E9 ]1 f6 h* CDatetime | Downloaded by | Counts
! ^7 |4 J% n' r/ r0 l2008-01-18 00:25:24 | 阿感 | 2
8 v: I8 y8 P$ m2008-01-18 00:24:20 | playbr2 | 2
! Q" Y+ [$ @8 _: h2008-01-18 00:22:02 | 但丁 | 2. Q" U  t6 ?) s3 v$ N

% N. h# u  k; Y$ |點解大家都down兩次? XD

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/ }1 z5 D4 A& g7 ]; \' S快d捉我錯處& R7 Z5 a" H) s6 B9 u
話吾定我都打錯 + - 符號
* D7 B9 \  T/ }- J! M% t( |$ Q係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當& ~/ \2 @0 u! n' Y0 L. n* h
不過,c=101n哥度(解除n係正整數的限制,只是整數)
$ M6 V$ i  U* m* X8 C  b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~)
/ K: M1 K7 E: h! C0 N& w' b( y知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
; `& U+ u1 j/ i. D) u6 X+ i但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
& v3 _8 H* h% |2 x: @& r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6 H! @& c: ^* L/ k; }& C7 O+ c
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....1 z4 h$ E( |) n2 q8 d" B0 G

! A5 `! G; t  k( ]; T) a# E5 q* L2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:# R; a1 x8 X; O6 E9 z0 D/ h) B
冇答案ga....1 }3 [3 \6 K* I: p4 X& V
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2條equation solve 唔到3個unknown ga....

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( t, t7 Y; M" \7 K6 Gagree
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2 equations 2 unknows2 l- t/ ~+ Z6 a9 ^/ K* x" C

  |# ^* J! `9 T+ F" N$ x, v! |4 \if 3 unknows there should be 3 equations
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1 S0 j" V, O0 o" S5 ]& d8 Amake it simple $ i* E* R  B0 q* R2 Y- F

% E% r, b$ [6 j$ |/ Hsay
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/ a. t7 Q1 e* u  W8 h# V1 E# h, ]a + b +c = 3; T# E- v+ W8 O5 `
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a+b = 2
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then c is 1
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a = 2 - b
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so 0 = 0 + `9 s  x4 @+ Y- c; |% j
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
  U5 O- W, Y" V) d0 X  c冇答案ga....# J: ]" \# d% A( c6 w2 B. V0 z

5 A: C2 Q! [2 W) Y' {2條equation solve 唔到3個unknown ga....

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此言差矣~
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7 R- V6 q$ l+ X0 R1 S  T2條equation solve 唔到3個unknown ga" i! _2 ^' I. E/ n0 l$ b* X
還欠一個條件,就是3條equation都是linear independent(線性無關)的' Y4 O9 ?( o# F2 p$ h& u* x/ [
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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
& V5 f4 k; q$ I3 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
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* w: ]! ~  b9 ^+ J. ~. m: w" ^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~)
; Z5 d4 N; W  y例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解! `8 ?& m) {4 X
有興趣就解解看. l) l# H7 K( `5 ?: }( f/ g" p
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:1 Y" g: z  |9 J' N7 n/ k7 c

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- x( A" E" b0 ]# x5 N# o- k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:3 `% {3 C: i4 Y( M$ j
捉錯處就唔敢當& K1 D" O/ F7 X5 N- o/ K5 V
不過,c=101n哥度(解...

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1 k% ^% w2 {$ x! Q& O6 z3 S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5 o/ S6 `. L4 d% l# o6 b
反而適當地調節一下 , 咁會理性好多
$ X. E4 o& @, T7 h5 W. ?就好似隻game 由12粒珠 加到13粒珠咁
3 a0 X- G; ]8 A當''堂''好玩哂
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7 I% a8 I9 k5 z1 \p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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% _' ]3 x4 z9 Z' V9 \p.s. 求''堂''字正寫...

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已是正寫吧