sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2: M& I% I$ v: k! X
2008-01-18 00:24:20 | playbr2 | 2
. a/ {6 Y4 y& r" G! A2008-01-18 00:22:02 | 但丁 | 2; j( D; N  h7 t! \, c
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
; j/ _6 |1 K, A2 V4 R) ~# S, z  mFilename: DSC01158.JPG3 X  D& Z; w1 D5 n' E
Datetime | Downloaded by | Counts" _+ j% g4 ]" c$ G, t: k" {% ]* M
2008-01-18 00:25:24 | 阿感 | 2% D5 p2 o8 _$ b' N5 z
2008-01-18 00:24:20 | playbr2 | 2
0 Q" b  H2 t8 n( }8 }2008-01-18 00:22:02 | 但丁 | 2# w, h+ b. ?8 A: T+ m

% d) r  e% A& A- u( g3 D點解大家都down兩次? XD

( ~2 m, F& h6 F

/ [9 X1 T/ \/ E& M6 h0 L; u* V我第一次開睇左2秒就close 左
$ x! Q3 n0 n3 \0 ]/ |. g( S之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:7 s$ h' n- K: Q) m3 W9 C
Filename: DSC01158.JPG
, l7 r$ z& I; _; y' w2 O* m$ `2 F- EDatetime | Downloaded by | Counts, E* v% \5 G$ R5 L' O% p. \. N4 A
2008-01-18 00:25:24 | 阿感 | 2
6 P6 N9 f0 L6 M: z/ r, H2008-01-18 00:24:20 | playbr2 | 2
, R: C" ~8 B# {" e9 |9 R* B( x2008-01-18 00:22:02 | 但丁 | 2) _( V2 d1 o8 c+ t# c
4 O6 q0 s* O" X, D) Q. s7 S: h
點解大家都down兩次? XD

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/ c" E: j3 _5 d: [快d捉我錯處
& \6 r$ y/ r) P; n4 s: K9 P話吾定我都打錯 + - 符號
2 A  Y; b  ]& i4 }係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
) `( Z  y. t( P" }, N9 u不過,c=101n哥度(解除n係正整數的限制,只是整數)
( E7 F# Z# F. a% K( R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~)! V5 \/ `9 d2 o
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
2 v& y6 L0 C7 L9 s0 Q但原先是不知答案,所以唔知有無失根7 a+ G1 K* q3 z+ M, O2 a2 w
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有時見到題目都感到有點不爽
- g* V3 e, S# |  f. D+ K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
; a' ~2 l5 ~6 E, G% K4 G# `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....( c7 p: g( X1 s: C1 t0 `/ L( \

. g$ |+ b" Y& c) t* y% [  ~2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:9 W# q+ C5 p/ N# |& ^+ |. \
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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+ A$ s  ~! \- Magree , v+ z* K9 f) L3 p7 B* v- B6 L: ^

) q7 j5 V( o+ f8 S  T8 W2 equations 2 unknows8 D! {; C& B' X. U# T

- s7 P3 x) o* \% ]* L; pif 3 unknows there should be 3 equations
  d  m+ c! I  t. D% e+ w
/ h, @+ k& @: J- Q/ K7 V. @make it simple + |5 F) S6 Z/ c* [. W( W8 W' Q# \
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say # P* k, V  d/ a5 `" L
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a + b +c = 3' w( R1 l4 x- `

# t7 h/ m2 [' I* r& ia+b = 2
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5 Y" f, W7 v& c+ G& w9 {, mthen c is 1 9 u9 ~  Q+ d) f! o0 ?+ ~3 B
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a = 2 - b $ q1 f! ]% n6 }' I3 I% f

! `' a' D; a4 l1 R* b* bso 0 = 0 & o' A( C$ g) D, G# ^

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 W$ b( z: T9 p$ _3 ]4 a, @; S
冇答案ga....8 _, ^( ]. g) v: _
9 Q- C# X# j5 ~8 y9 Q! q
2條equation solve 唔到3個unknown ga....

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# x/ Z+ W$ t8 S5 I0 S; l, D' ?. L此言差矣~
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2 {$ r4 g: ~2 r2條equation solve 唔到3個unknown ga1 ]2 u& [# W* q
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5 x2 t7 d5 y7 ~3 q
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. k' u* g2 k8 F! o1 H" v

- H$ @2 o9 x5 g4 M2 h) h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~); J. m  n4 O/ k8 I' w
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 k0 Q* X+ Y1 R3 f有興趣就解解看
+ [& K3 I4 H0 T* ]- I$ n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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" I5 L( Q. T# Q9 ~! }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:
9 N4 n; ?: j$ O7 s' z2 G捉錯處就唔敢當
3 E$ v3 Z9 W+ r+ {2 i, O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% ]8 I2 ]5 o( v5 u9 ~3 R
反而適當地調節一下 , 咁會理性好多+ D' D" x0 P. h; c- b# d, w
就好似隻game 由12粒珠 加到13粒珠咁
* Z  O/ E, u" G, j$ U9 x( y當''堂''好玩哂
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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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! S5 m. V; z* P+ Z" Q% @$ vp.s. 求''堂''字正寫...

' |5 C8 O' E/ J已是正寫吧