sakura310

Filename: DSC01158.JPG
  |1 T4 D$ Z. y9 s3 R' S4 nDatetime | Downloaded by | Counts: a4 G" @$ ?! |
2008-01-18 00:25:24 | 阿感 | 2
9 S$ C. E' K+ d$ v8 ?! E: I2008-01-18 00:24:20 | playbr2 | 2/ E5 h" W! ~& u- T
2008-01-18 00:22:02 | 但丁 | 2  Y' @6 d( c; L+ O/ d9 P* S
% n: z7 \7 j2 p, ?- h- D, |
點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:0 D+ b& m: E2 p0 j* ?
Filename: DSC01158.JPG) h+ z8 t+ z: T: t5 }. m  T  a
Datetime | Downloaded by | Counts
& d+ Q# D  d3 z. P+ e) T. X" y2008-01-18 00:25:24 | 阿感 | 2
. ?$ T# J  X9 [2008-01-18 00:24:20 | playbr2 | 2/ {. t$ w" f$ Z" {: i
2008-01-18 00:22:02 | 但丁 | 29 |: ]2 G+ D9 Q! `" T& Y7 ~
' y9 u% ]4 t; A5 d/ S# q8 l( F
點解大家都down兩次? XD

3 \( L; u9 I$ t7 P
) D& _/ B/ \3 z+ S- s
我第一次開睇左2秒就close 左% B5 D. D/ r; p' V2 V
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  n+ J* A* ^% Q$ Z5 g2 H
Filename: DSC01158.JPG
( v- ^/ ~# N  R' h2 n4 ODatetime | Downloaded by | Counts
. u- x1 U! {1 B) O4 i. ~/ G( J2008-01-18 00:25:24 | 阿感 | 2
. _/ N1 {1 G3 A2 ]  \. w2008-01-18 00:24:20 | playbr2 | 27 d: c3 f0 p* }# I2 n
2008-01-18 00:22:02 | 但丁 | 2; s4 K) o( U. y* u
, h. G1 l$ {! a& A, I
點解大家都down兩次? XD

* s( \4 f7 ?0 ?3 ]7 k
# J) e$ Y8 m8 J9 H& y" D! n
快d捉我錯處
! n! E5 N6 Z6 Y! L5 O9 J話吾定我都打錯 + - 符號
: ]! @, E0 o! x. l係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當% y2 x( ^1 P9 ]" J/ J* q6 z* ~3 M
不過,c=101n哥度(解除n係正整數的限制,只是整數)' c, L' p5 s9 _0 [
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~)0 P0 z: r  ]% v) C
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
+ f, T5 T0 z2 B9 f& P但原先是不知答案,所以唔知有無失根
+ J& x0 j( @$ j( g2 c# `
7 ]* q+ R9 O9 s2 t6 ~6 y8 B有時見到題目都感到有點不爽
! u7 c9 |9 X+ f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
( ^' S: H$ O7 w, m$ n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....; `& y  `1 @. e) A

# G+ v" x% [" t" [5 Q2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:) i- L: |  A, z/ y: {8 z
冇答案ga....$ |& Z! q* f1 v' g6 v9 j
8 J- I! r; c5 }: s0 ~
2條equation solve 唔到3個unknown ga....

* r3 A% ]0 f3 y% @1 q4 Z* E6 q/ {7 t

( V$ l9 d( @2 Z, dagree * e0 ^! ?2 Y. q. E
1 R- q5 y( i* C7 x" o2 P
2 equations 2 unknows
( B) l# A3 _* L4 ?6 k& m. e0 y
0 C) J0 N. \* w: `, _/ Uif 3 unknows there should be 3 equations 0 S- f4 Y. _) L! \! Z1 t6 U

1 G8 p4 t1 g6 y! b4 hmake it simple % k5 L2 [7 L5 l* |9 o% |

0 ~1 \5 C3 |4 P- O0 Q8 Wsay
  f8 k, U1 M" @# M# `* {6 q* h1 V
% h& z) j& n' y" d! @1 Ga + b +c = 3
5 v: D! K) o! c9 r( Q. P- `7 y& p
a+b = 2
2 ^4 t* O( Q" d: X0 u. `. R1 V6 n7 f5 f% b0 d, `* y: {
then c is 1 0 |, r4 I# M' D4 A# u8 h7 h

0 Y6 W2 t3 q1 x) `a = 2 - b & s8 u  e! t; d1 ^4 z4 x, \

: l" o6 U- k% E3 l" |7 Eso 0 = 0
' S3 C2 d( m1 R& Q( U7 ?5 |
1 e, f* R% t, h& w# ~  \/ m

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
& i$ K! S7 s* P9 n: \& `% p冇答案ga....
# L. i" m8 n% U- j! R; T
0 l: \3 ~! {7 n2條equation solve 唔到3個unknown ga....

$ Y! [+ J8 y3 d+ p" Z' _2 u$ Q
$ n4 {, b2 \3 T0 i' n/ H此言差矣~
6 Q) G8 s% I, n! r- Y
/ I$ ?3 ^$ L* v$ p; c$ M2條equation solve 唔到3個unknown ga
7 c9 o2 N' a# A還欠一個條件,就是3條equation都是linear independent(線性無關)的
% ^* Z8 @: R! X, W) c- v
  K# w- X, t. G( W+ k簡單點說,多元一次方程就是線性方程的一個例子
+ A6 r3 u2 F! v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
! T+ s% A' O1 i* \
2 u1 D. ~9 d. Q4 O- `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( @7 d* {: f* J, M0 c
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
0 I/ @* q, B6 B: d4 _! }8 _有興趣就解解看+ H5 V- b/ A0 P7 b7 K: p% G' o
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
& d' z; y: e* L2 o. w  u  b: y" A3 y6 W8 K* @: X. f" \, f

. `* H+ H* J  B7 a, B1 Z不懂的話就問playplay,佢會知答案

% ]6 J' b& i* @' }/ U+ y1 U3 G% S3 A9 u6 Q0 |, |( f: n9 d' x

playbr2

Originally posted by sakura310 at  06:47 AM:( a  @' ?) v' u2 w& e
捉錯處就唔敢當
: R( b3 g/ @" Y, u# v不過,c=101n哥度(解...

/ M" Q0 \8 u0 P7 V- r7 d

& O+ t6 r8 k, M/ |: c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 \( |+ I* C- q反而適當地調節一下 , 咁會理性好多) H( b  x5 O, X7 S6 M
就好似隻game 由12粒珠 加到13粒珠咁
4 Q  E: ?, Z4 Q/ r# l當''堂''好玩哂
; |& @6 \* L3 K  Y2 v9 z
% H: O% J$ F- T) Ep.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
6 F; J7 ]1 l( F
' j2 t: m! i& e  A" v. b- A. w2 U# c% h( f
p.s. 求''堂''字正寫...

) d: R- O6 X) S1 g. J: F* f
已是正寫吧