sakura310

Filename: DSC01158.JPG
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, n3 |8 c( h, K( U/ {1 I2008-01-18 00:25:24 | 阿感 | 2% Y9 S+ b, t2 ~; |# c
2008-01-18 00:24:20 | playbr2 | 2# g! a- G+ n; x# {1 Q
2008-01-18 00:22:02 | 但丁 | 2
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1 Q. u- d. R  ^點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:. f& {7 t$ q2 ?4 z
Filename: DSC01158.JPG( C' @2 z) C1 X& X4 d
Datetime | Downloaded by | Counts( j! s/ a- M4 C  }/ J. H
2008-01-18 00:25:24 | 阿感 | 2/ b1 `& A$ i# P0 L+ J5 x) c; f
2008-01-18 00:24:20 | playbr2 | 2
4 E7 [9 c9 I) c  ~/ O8 S, ^  [- h, M2008-01-18 00:22:02 | 但丁 | 2
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8 P( c/ m2 [* |$ j- F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
+ j' t) c- a5 i* e- u" n之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
' [9 c9 O9 _8 d1 J/ ~9 [8 V1 NFilename: DSC01158.JPG% e4 h1 [" B8 Q: E& g" d% W
Datetime | Downloaded by | Counts
4 H1 E% g, T- I% m( p9 J0 I2008-01-18 00:25:24 | 阿感 | 2
" n+ d- m5 m% l' g8 L8 |2008-01-18 00:24:20 | playbr2 | 27 |# C1 [7 \8 J- G, m( |- K
2008-01-18 00:22:02 | 但丁 | 2
8 _! l$ t  E4 b% t- k8 S! H* y
, o9 p  S/ O0 C6 B" W點解大家都down兩次? XD

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# g& n* Y( b' C+ A快d捉我錯處3 H+ y  b4 u, ^
話吾定我都打錯 + - 符號
7 O* l6 e$ a7 R( t9 V' B係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
6 I# L0 Z5 U0 @& Q不過,c=101n哥度(解除n係正整數的限制,只是整數)
/ o6 n* L3 t& c8 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~)
8 u+ m. A7 I1 t知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
- W- y2 K" e- k% {4 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+ z( w; ?; q, ^& v) S. `2 S) f8 h
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3 S, _* K! F+ _2 @. @6 m4 z
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& V& d5 n  H' J
冇答案ga....) c. t4 e0 u# f4 \% g0 Y0 D; u4 g2 s
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2條equation solve 唔到3個unknown ga....

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& c' }; x& Q; V0 g7 Sagree ! B2 y" Y" k  f7 C* X* E' p

4 f3 M' x: ~% _9 a. k' k7 G2 equations 2 unknows5 a2 }. \7 A% l

& A4 ]/ d. w3 [+ q5 A7 m; M! sif 3 unknows there should be 3 equations
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make it simple   [8 Q! v9 n# |5 L0 D0 M
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say # J; t/ k! }. r
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a + b +c = 3
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8 ^1 H& f+ y! K. ~7 U2 v! Z4 la+b = 2
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then c is 1   X2 `8 @+ K7 O3 c1 ?2 R3 x
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a = 2 - b " C# y* w. r% n7 O$ E6 Y

: N) g' ]( W7 U" [; p, Fso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
# _3 Y' v7 \+ S7 H/ ]7 H冇答案ga....- F5 j- \* o3 u
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2條equation solve 唔到3個unknown ga....

1 i6 }) F( k. N0 x# K. [: i1 S" S- Q" `' ?
此言差矣~
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# ?0 q  k3 D( I4 M5 X( D0 g2條equation solve 唔到3個unknown ga
1 L& c6 i4 t* t+ ]6 V1 K* `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0 i( U) ]* W$ G% ^" U# i
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, [* ?2 ^7 s6 D9 ^, J7 W- `

' ^# ~1 k% j& V% D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~)
) l0 ^$ E4 c3 h" E# H例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解4 M; P& ^7 c5 ~( n0 I- s% v# z
有興趣就解解看. d* L8 m  t$ @3 T7 m7 e
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:3 P3 M# r4 l3 e2 E  h- Y# s
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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:
& e0 z3 w6 z0 z0 y7 F# W5 {5 J捉錯處就唔敢當  n: }9 N. k5 D* |0 y$ o. G( r5 k
不過,c=101n哥度(解...

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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; f+ V: T* x8 A5 E. |) V
反而適當地調節一下 , 咁會理性好多! a& Y0 T4 z9 V' O/ u1 B1 }& `, S' n
就好似隻game 由12粒珠 加到13粒珠咁
5 S: T, f6 f) D. j當''堂''好玩哂
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+ m8 N9 e2 j& Z6 F, U. `3 Ep.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