sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
; S5 W: I# K* Q" P7 k2008-01-18 00:24:20 | playbr2 | 2
2 \  Y' Z5 a- _3 M; X# Q2008-01-18 00:22:02 | 但丁 | 2
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& x" }, Y3 H( i" Y, l" B  \點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
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4 s% w( Y9 e4 @5 f1 R6 R5 PDatetime | Downloaded by | Counts- v9 Y1 |* V. J( @* R
2008-01-18 00:25:24 | 阿感 | 2
, p% s5 R$ d0 \2008-01-18 00:24:20 | playbr2 | 2: z+ L% Q. h5 W
2008-01-18 00:22:02 | 但丁 | 2
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  N9 \6 G6 {' \# K: a0 r點解大家都down兩次? XD

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( Y2 `" I6 g8 {: g' R我第一次開睇左2秒就close 左
% E8 e& }* l/ p6 B& F之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  [% C1 _6 a) D0 m
Filename: DSC01158.JPG
- P! c; Z9 m# T9 Z8 V7 U9 @3 sDatetime | Downloaded by | Counts
; J" V  u. k" Z5 y2008-01-18 00:25:24 | 阿感 | 2/ K5 D; B5 m+ m" V6 {
2008-01-18 00:24:20 | playbr2 | 26 j+ _) N. a" {1 a5 u
2008-01-18 00:22:02 | 但丁 | 2" y4 w; ]2 h: T, p. A, t( f
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點解大家都down兩次? XD

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9 |4 A1 v* d, _! y$ l: ?) M' e5 P
快d捉我錯處) U8 p3 }/ z# w$ f
話吾定我都打錯 + - 符號  F+ U' m3 L8 y( o$ Y4 O, J$ s
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
" A8 j1 n0 r/ O( {; B, D+ o# X% D不過,c=101n哥度(解除n係正整數的限制,只是整數)
# C: T' E1 b( p# ^1 \% e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~)
- Y+ f/ n. i5 C知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題9 Y6 J. y9 M& W2 H& K1 Y4 D3 X
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" i6 A6 W+ T& K3 c
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/ c; x4 I; g& g$ Y$ D9 a
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....: e; n5 a* m' C% n8 U7 J+ C6 g
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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:" I9 Y# w) n9 r- b: L
冇答案ga...., W$ N' ]$ d# H2 c

1 o  }8 v; [; T+ M: y1 E# G2條equation solve 唔到3個unknown ga....

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+ y! W) X5 t  s9 g$ ragree ! }; B0 k0 A( E$ Q: j$ Y

; k2 {  u4 J. a7 i" }2 equations 2 unknows2 _# C- \* J. h+ [& f3 [! ~
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if 3 unknows there should be 3 equations & p- p# l! o  n9 H8 h" v; i  n* `8 @

5 b' {: D. }( r0 ~6 @( H+ o3 d7 F, umake it simple
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say
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9 m$ p3 w+ R9 l( S; C! ]) ra + b +c = 3
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a+b = 28 _7 t, x6 E% H

" l* N: p* \( Y8 l( {1 }then c is 1
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a = 2 - b
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, x! z1 T, {6 d" vso 0 = 0 3 g2 H; I, k% v, I$ i; @

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) S. ?* Z- _: S  K$ U: N  V9 X
冇答案ga....
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8 x1 S! T( j- w% y: O2條equation solve 唔到3個unknown ga....

  Z8 n! Q# N: v- D& H: W* J+ D; v6 u8 N7 X5 ^: c
此言差矣~
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2條equation solve 唔到3個unknown ga
3 G& e0 N" O* W6 P還欠一個條件,就是3條equation都是linear independent(線性無關)的+ ?0 V7 m' q( t3 h, z
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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
# J$ B5 c; O4 T' q+ L+ r. R' L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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. a) I4 D- W1 t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~)
0 G' ]% N0 Q) u% ?7 O+ ]7 ^例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解5 e; n) |3 Z8 ~% U
有興趣就解解看3 o% E2 [2 D9 l# _- Z) I2 Y
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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1 m' J. ]6 p9 ~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:& ]. w1 T, n9 W, U& F$ B
捉錯處就唔敢當
. I. a" `7 }; `; d2 s' a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" h% N+ v+ r2 w) H! _, \) J) J) [
反而適當地調節一下 , 咁會理性好多7 A9 {7 ?$ L; k: ?$ K: T7 a
就好似隻game 由12粒珠 加到13粒珠咁7 z* l0 ?9 c+ @) Q
當''堂''好玩哂: {6 E$ _+ g. {; S2 ?
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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* x5 U0 ~$ \: b: d; b/ _p.s. 求''堂''字正寫...

% A4 n4 x4 E( G; J; w已是正寫吧