sakura310

Filename: DSC01158.JPG( U( v4 s) T; E( s+ M
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3 P  G7 Z3 t; ^+ i, J, y$ X2008-01-18 00:25:24 | 阿感 | 2$ j  V4 x3 w! l) i4 @  f6 K
2008-01-18 00:24:20 | playbr2 | 24 H8 R" n/ l+ _3 H+ f" q: P
2008-01-18 00:22:02 | 但丁 | 2
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$ v6 H$ d: R" X) T2 r5 u$ t, L' w點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
6 g0 v3 m" s! y; SFilename: DSC01158.JPG
% k/ C: b* e2 [+ mDatetime | Downloaded by | Counts
3 a; _" g& k8 m* |' s: S2008-01-18 00:25:24 | 阿感 | 2; ]4 `/ \  H0 B! v$ c# v0 o
2008-01-18 00:24:20 | playbr2 | 2. {) N- u9 t! O2 o# i
2008-01-18 00:22:02 | 但丁 | 2
3 V% B/ X+ G: i+ e2 [& C
) u3 o$ D! C2 H' {+ R* P- `0 C( m8 a點解大家都down兩次? XD

4 E6 N3 Y( [5 F8 h

& d2 ~, B8 C5 v8 \3 C. g/ j我第一次開睇左2秒就close 左
4 r9 Z/ S5 O8 T7 `1 W* O+ F* O+ C& ~2 w之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
. P: B. t- i% c$ I9 R( bFilename: DSC01158.JPG6 @( @* H9 C* u- K1 {( c8 L+ c2 v" |
Datetime | Downloaded by | Counts
) z: r$ ]# Y  K! e8 G, u2008-01-18 00:25:24 | 阿感 | 22 B* D' r8 C) t' x
2008-01-18 00:24:20 | playbr2 | 2- ]5 q, l$ J- ^" r  V# ~9 v
2008-01-18 00:22:02 | 但丁 | 2- p) K$ i7 G# ]7 n( w7 N* {7 F

7 _6 T6 ]7 X" x( y& g點解大家都down兩次? XD

+ A* |9 Q& u" o: ?1 t6 B" @% ]  c8 A. j) z
快d捉我錯處( @* `  ~& B5 r/ q5 r" K- l9 ~, L
話吾定我都打錯 + - 符號: K7 H- y! i* @* d! @
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當. ?  _  d. I( G1 s, g+ ~
不過,c=101n哥度(解除n係正整數的限制,只是整數)
& z& Z: `& s4 Q) K7 Z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~)
- _4 Q- `8 [+ Z% n知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題+ v0 F; ]$ n9 I( v7 }% @
但原先是不知答案,所以唔知有無失根
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& d; T' \7 l0 }( X! v6 C有時見到題目都感到有點不爽7 i+ }* G5 G  J8 Q" 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( |# H& z: H1 B
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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% l" e. ^' _) Z& B# k8 [$ Q2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
: |3 Q' e; N. u& `" r, p冇答案ga...." ?) M( l2 G3 c, G: q5 O* w) ~
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2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows$ k; U' U3 I$ `6 p' W8 O- T
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if 3 unknows there should be 3 equations 2 R2 [& A. m* u8 b; G

$ T2 o  r0 ?. x! q1 ymake it simple % [4 R$ E0 J8 E5 l

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a + b +c = 3
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; B2 [5 y# s/ Q9 }& G" [a+b = 2
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# K6 U  h0 d2 l9 L% E0 uthen c is 1
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" u0 q! L6 p  l; M  J/ _a = 2 - b
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9 @8 l, D6 ]7 u; J% [5 Hso 0 = 0 ' p& j+ v7 i) h) N
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:/ F8 Q: E7 @$ t7 E
冇答案ga....
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  i( Y5 ]. A! b1 |% L+ `2條equation solve 唔到3個unknown ga....

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此言差矣~! k! v* O4 P6 Y% ^: o& D$ q- r

& J: r& C  h+ k9 A3 r+ s2條equation solve 唔到3個unknown ga
% W/ d9 i, N. y) |還欠一個條件,就是3條equation都是linear independent(線性無關)的" V0 X9 M6 x9 E3 |5 A& ?) _( |) m
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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
2 ^% o6 `" A7 b( ]% X: O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  U; v1 I1 J  y/ Q" \6 J# [
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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~)) L6 X" k' }4 D7 J
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
: t7 G/ G, ?+ i- V% n' x, T8 u4 k有興趣就解解看+ O+ G2 W- _$ M! S# Y1 ?& R- K
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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6 ^! Q$ `4 O( h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:6 l# M/ }2 ~3 c% t
捉錯處就唔敢當1 a# }9 d- ?, }5 Q& \% Y3 d
不過,c=101n哥度(解...

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# E# i% _) p) ~4 p3 Y- l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
2 u/ W+ ?1 O% ^' N7 @9 ?$ T+ u) P反而適當地調節一下 , 咁會理性好多
; ^, w, J; r( O3 e' w+ t. W4 s1 J' \' O就好似隻game 由12粒珠 加到13粒珠咁6 Q5 J' h8 \" B
當''堂''好玩哂
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! t: h$ x8 |/ x: V$ xp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:/ m% \' G5 W4 @% u) M  d! H- \- x( J
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6 b9 J/ o1 e7 ~2 g, Tp.s. 求''堂''字正寫...

6 Z, k8 a( T3 K- ]) M已是正寫吧