sakura310

Filename: DSC01158.JPG- D4 e4 D0 m; v0 W; I) x; g- Y
Datetime | Downloaded by | Counts
. I7 v0 v# Q. \5 s$ \+ @. h6 ~2008-01-18 00:25:24 | 阿感 | 2, {" _; u: s4 N# z# ]
2008-01-18 00:24:20 | playbr2 | 2
) L  B' W6 V+ z5 b/ @2008-01-18 00:22:02 | 但丁 | 2
- k- V" T, t1 L3 m6 H4 ?7 Q- [! e4 J; Z  _+ h1 M/ q& C
點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( m) J9 q8 g, O, O7 K" W, q5 b$ p
Filename: DSC01158.JPG) N: s3 z/ S/ {0 b, T3 L$ b2 g) p
Datetime | Downloaded by | Counts4 p# \. s  V1 Y0 X3 p. T: S
2008-01-18 00:25:24 | 阿感 | 2' b6 s% c+ [5 `5 v
2008-01-18 00:24:20 | playbr2 | 2
6 v2 L: U% H5 R  K) t9 t1 `2008-01-18 00:22:02 | 但丁 | 24 h9 @8 f  B! Z  n5 {0 M! I

5 M, H# L  y4 {) G" L+ w, u點解大家都down兩次? XD

* t! q" K" p8 H/ `
4 O; x8 C8 \( z% M$ _4 R
我第一次開睇左2秒就close 左  _% B" f( R3 T! C6 N, I
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( @, Q9 V+ f) I4 Z+ W
Filename: DSC01158.JPG- ^3 a, x! v; t; N" |
Datetime | Downloaded by | Counts6 z; L  I$ S5 @( }  j) T8 k
2008-01-18 00:25:24 | 阿感 | 2' A1 K$ h6 V3 t9 }4 e
2008-01-18 00:24:20 | playbr2 | 2
: @: I) P1 y6 b+ Q2008-01-18 00:22:02 | 但丁 | 2% C3 U6 Z. L8 }! P1 T* H

, l$ t: N1 T# ?+ ]( }. N點解大家都down兩次? XD

# T7 F1 Y- u# |3 r" A8 t- |

9 d: H* D1 Y2 L2 V! u快d捉我錯處- Z; }3 r: G& W# c' d. w
話吾定我都打錯 + - 符號. E" c3 N& z" T$ @: r$ V3 B
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
, R2 Y( X! D+ S7 n9 O# q5 f8 J/ d/ q不過,c=101n哥度(解除n係正整數的限制,只是整數)6 i8 O( o6 V2 Q9 N) {& ?
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~)
! I8 A3 |# a& B) m$ A9 a知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
- Z. O- x! s! K' |( R但原先是不知答案,所以唔知有無失根9 N8 z  `* Z6 F0 h8 W

' x; y' y5 |1 D有時見到題目都感到有點不爽
8 a. F' s" b/ N) e* N( t5 _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
" Y8 X( r# j/ A" Q8 o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....$ F. Z6 |+ r, g/ O
, n1 S3 [. c* q  d$ j; v
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
, {! d# O. ]8 J* n* r) s% M6 ?3 N" c冇答案ga....5 ^" y# ?9 h% U. }; p6 r
' D, j  g( X( ~8 T- s7 T
2條equation solve 唔到3個unknown ga....

. W. _* q3 [4 J( q- U5 l% p4 Z4 l# X9 Q' g
agree
2 c3 g1 O* a% Z+ `9 X. P7 o8 j9 u* O( S
2 equations 2 unknows& k; M4 ^( J  v+ g# e$ ^
( l, F3 |* h  O$ n
if 3 unknows there should be 3 equations
1 ^9 q9 P; _; r* S7 O9 I% F
5 u6 m8 e( O& M" }- B8 k7 w: imake it simple
0 B8 p9 h- e5 ^5 x
5 I7 u( x; ^  Z9 y3 f- A$ F, Q- rsay / U! b- A, ~5 E' i
* z+ K# G! ~) X3 P4 v5 r
a + b +c = 3! n# l. J& l0 C/ E- X" R
: i8 R/ D- [# i" ?% U$ }  R" t$ ~
a+b = 2$ |4 z4 L0 P4 G5 P; H3 H
* |* E- G" c8 Q3 ^
then c is 1 / u: {5 x' O- _7 m: f  p

) I- t5 b( Z8 i4 Ca = 2 - b
0 f; f# }8 H5 O# f( x6 l7 g
7 U% T0 K& k9 f7 d- {0 `so 0 = 0
, ^9 a' B0 O  N3 X& @$ Z6 ?" `; ~( h; D, m

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
2 j9 G! H  ?  {  S冇答案ga....0 E. n/ P0 @8 P4 `
0 `- g7 M6 {5 P5 W
2條equation solve 唔到3個unknown ga....

( W+ T6 M( y; }% |/ d8 x! k$ U! _3 U' o1 v1 m0 Y
此言差矣~/ [% v* I& k, ^2 A, e
$ w0 o! P# d$ T7 {- g/ t
2條equation solve 唔到3個unknown ga
; ~; ~; X9 V  _; i6 o; u3 Y% ^" D還欠一個條件,就是3條equation都是linear independent(線性無關)的, y4 z" r- X5 G

9 i( e  q' r2 s) v4 q/ d! [簡單點說,多元一次方程就是線性方程的一個例子
" [" D1 k" f* c% g) e9 X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
0 }- W1 Y' \8 @/ E+ h
& L) E  w+ V; {. r! G* `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~)
5 ^# C5 M0 O. k例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
, _- K- n0 V; K$ a) ?8 @有興趣就解解看' x# _" _, z5 G
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ v0 B! \9 N4 k1 l* Y1 t. G! `

- C5 u8 A8 q0 I, G7 B9 b2 p7 v9 f9 z* Z" \8 x3 L0 m* Z
不懂的話就問playplay,佢會知答案

' d6 r/ d! Y- q: X1 M8 i) w6 k
+ j% z- e5 I  r5 B2 o

playbr2

Originally posted by sakura310 at  06:47 AM:
; o; Y$ h( m3 |* e捉錯處就唔敢當7 `5 h8 T/ b' f- q2 o) L
不過,c=101n哥度(解...

' g2 h! l: H; ^: f" W
/ @0 U9 Z% S6 S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
" ?* S2 `5 f* q4 R" ^( ~7 W1 t) o% J. ^反而適當地調節一下 , 咁會理性好多/ w3 R' E% s& N; I! |
就好似隻game 由12粒珠 加到13粒珠咁; w; C2 ^3 C8 D7 k" y) V1 _
當''堂''好玩哂. o/ K) c  N0 V2 }1 e
3 S' v) b' ?) d" T) H, ~
p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
/ B% C9 N2 [) d) g8 n9 \$ e  P2 Z# X6 ?6 k6 y& m8 Q# u$ \1 j  Z

  L  g7 q6 Z$ E+ z2 ?p.s. 求''堂''字正寫...

: K2 H3 O& N1 q: A
已是正寫吧