sakura310

Filename: DSC01158.JPG
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, ?- n$ C% K6 h2008-01-18 00:25:24 | 阿感 | 25 B! A& _- K1 M8 U# l
2008-01-18 00:24:20 | playbr2 | 2! ?: {% _* Z+ S+ D  P, }
2008-01-18 00:22:02 | 但丁 | 2
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/ }2 r% t2 n, }8 ^- z* G點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:" X; @* S( l8 @5 m3 r+ `
Filename: DSC01158.JPG8 E( S: j& H1 \3 a2 C% K2 w$ J
Datetime | Downloaded by | Counts* a6 x# I& Z; [7 _2 v
2008-01-18 00:25:24 | 阿感 | 2+ S' L6 @8 g! C
2008-01-18 00:24:20 | playbr2 | 2! v0 V$ S$ i9 s( x- x4 N
2008-01-18 00:22:02 | 但丁 | 27 a4 P1 O5 D; ]9 {
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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
9 |5 Q1 i  h+ l; j之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
& |1 x3 ?- y8 X2 C: vFilename: DSC01158.JPG
3 `2 T* D0 T/ v: T9 z/ J  TDatetime | Downloaded by | Counts: G- R7 b' K# |; ~5 f- O2 z; A
2008-01-18 00:25:24 | 阿感 | 24 A2 i4 T6 |! C4 e
2008-01-18 00:24:20 | playbr2 | 2
! E5 F4 i9 N9 ]' o1 Y2008-01-18 00:22:02 | 但丁 | 2
, |  R2 O5 v# i- `0 D4 k  ~0 {# j. w* X" @% l6 ^
點解大家都down兩次? XD

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快d捉我錯處
1 p& N) S, G0 v- l1 |8 r話吾定我都打錯 + - 符號
. s; y% v; r& }+ n8 L, O2 ~' v2 \係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
' p: ~+ }$ s$ r# i( K& v不過,c=101n哥度(解除n係正整數的限制,只是整數)
) I6 b3 X1 R$ c( j7 i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~)
6 I  o2 W& E* H# o) N9 C$ C. z知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
4 ]" k$ I+ G( M  |0 m9 I  n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: _" w; }' g+ u. h9 N
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
4 c- c( U9 M$ y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....% h2 |! G* p' m& G

. V" |! x9 _6 C. f2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:$ }3 Z/ P# t7 @+ K- m
冇答案ga....8 L* ^' n! [9 l- J7 a

1 z: t6 j! o8 h! z+ l6 d2條equation solve 唔到3個unknown ga....

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agree * M$ x- g5 {4 m5 `  S9 U

- R3 ~" R2 a* q) _' c2 equations 2 unknows8 N6 X5 z% P  X# ~
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if 3 unknows there should be 3 equations
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0 k, h9 U" W& @& s; w+ n9 Amake it simple
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say $ C' D3 I& Q3 W; y6 J$ D' ~

/ D' h$ [1 D3 h, Ra + b +c = 3
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a+b = 2/ w1 W1 R" ]/ R8 x% g

% `* R, g  G3 a. s: {/ v. w: Mthen c is 1
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  N% E( o4 N* g1 m5 na = 2 - b , P5 e6 H4 ]- O$ k0 ^% S/ v

9 f8 i5 e- H% o3 [7 y& ?; rso 0 = 0 & F2 i! ?7 F" Y3 Q
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:& ]9 U2 d' J( h5 [% V2 k
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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: f0 O, w. K! y' I5 P; U此言差矣~
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2條equation solve 唔到3個unknown ga
8 `* R7 g4 U9 C! k1 {3 F: @4 l4 r還欠一個條件,就是3條equation都是linear independent(線性無關)的3 x0 C  N+ l, G" ~

- S( P: d% f6 `簡單點說,多元一次方程就是線性方程的一個例子' [! k; d3 [8 T! C' p* x+ N5 N
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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0 `; ]: V# y- m' q6 u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~)$ y& ?% D, K7 U7 X# a! A$ [
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
, O! ]4 z2 c4 F4 J4 }9 u有興趣就解解看
5 s6 V9 L) g1 b$ a; ?% u不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:6 P: [- F3 O; U1 b

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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:
! }1 I( Q- n3 F  s/ E捉錯處就唔敢當) b: \0 W+ o& N- ^( B& z' x
不過,c=101n哥度(解...

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! N* u6 W- e3 Z' j* _! b! R. D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9 K, ?3 G7 U: q' U' b; Q. I2 r
反而適當地調節一下 , 咁會理性好多
8 V- m; I' U0 J4 X3 o8 i* \就好似隻game 由12粒珠 加到13粒珠咁- m* N8 A# p4 }2 p/ x! F
當''堂''好玩哂8 f8 @. \" R) v
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:. Q5 i5 E( b( F) F- e5 S$ o6 U

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p.s. 求''堂''字正寫...

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已是正寫吧