sakura310

Filename: DSC01158.JPG
  M9 ~6 z/ ~6 W1 |' [+ b; \Datetime | Downloaded by | Counts3 ?% u, R8 F1 N
2008-01-18 00:25:24 | 阿感 | 21 g1 W# \4 a9 f. r
2008-01-18 00:24:20 | playbr2 | 2, {% R) i! R' @3 _
2008-01-18 00:22:02 | 但丁 | 2
4 z% j! ]( r6 ^, |2 U* }$ R
! R0 ~% s& k% ^點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:- T1 }0 y& c" `, H
Filename: DSC01158.JPG. v) Q: F6 i2 P
Datetime | Downloaded by | Counts* a+ U+ z# f. f0 Q) x9 ~
2008-01-18 00:25:24 | 阿感 | 25 e& b5 y1 y2 d
2008-01-18 00:24:20 | playbr2 | 2
4 |. k# ~0 V4 d# r  Z. U! P2008-01-18 00:22:02 | 但丁 | 2
4 K# Z9 O. d3 [9 h7 F! m5 E8 x6 o; F# Z! s+ w3 f
點解大家都down兩次? XD

* s1 }9 q- N6 W1 j' d9 \

6 q# ^. q% A0 @8 F+ z$ m+ Q( x我第一次開睇左2秒就close 左. H6 g- ^, u8 o4 z
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:9 U4 H0 b* v6 c% P# u" U4 P1 {% d
Filename: DSC01158.JPG
( _+ U2 ^  j' X: H; K! ODatetime | Downloaded by | Counts
* q) C3 a$ [+ t2008-01-18 00:25:24 | 阿感 | 2$ k* R! x4 Y# l" @! T  @/ B/ q
2008-01-18 00:24:20 | playbr2 | 2& V+ c, @  G# X
2008-01-18 00:22:02 | 但丁 | 2# ~  z! }: @0 B# I
8 o" E4 _- a1 U7 P% V0 y
點解大家都down兩次? XD

, K* W# U( l. \' C' W$ S5 F: Q9 V1 t% M7 n" w
快d捉我錯處1 |$ O0 s" d0 H& U
話吾定我都打錯 + - 符號  E8 G* Y: B. Z
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當# K7 `/ ]: X: x' z4 ?: l
不過,c=101n哥度(解除n係正整數的限制,只是整數)  Y8 b' l4 t3 f) L; v
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~)
5 e* \8 T. B7 W! @知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題, ~4 m- \0 D" u) T7 t$ D/ o
但原先是不知答案,所以唔知有無失根
7 A, n- G4 m; k9 _! f1 ^
: U0 i2 A" ~' c+ \. b有時見到題目都感到有點不爽
3 a0 L% I1 m: u' R1 n: }1 y. D* I% Q# W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
! r  A) g7 u/ x! ~& X3 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....5 b1 t. H% N" K3 `6 ^& A( `* r/ A
* V; E: O4 b+ z& S$ E) C: R
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
1 v' ?+ q/ v8 o/ |0 X冇答案ga....9 F! l1 a' Y( k) @1 V, W" P

& X% \- q, \0 y' e2條equation solve 唔到3個unknown ga....

* |! L' D  ?* N: ?! p

: |8 s' m6 I3 d  v: y% j: ~* kagree 4 i- J0 E2 u8 s4 D0 {
2 v5 Y; v- ]- F" n+ }/ f3 H
2 equations 2 unknows
$ u# C4 M: |/ c) D3 a& Z
# u9 ~5 j1 I' R. H! n6 Kif 3 unknows there should be 3 equations
  |0 c. U5 V5 N* V0 R( @+ p& S$ @, r% S/ {( F. |
make it simple 3 ]9 b3 h: }/ `
7 p3 K8 Q/ ~  O7 F# M8 U
say
7 X: A% O4 O# q/ R8 {4 }: v9 p5 X
0 Z) Z; t/ J1 \a + b +c = 3
  L; A) J* L# @& y# J; _( v% U
) B: ]2 T0 b% v: P* P. M/ va+b = 24 U! Q+ s5 k5 ?8 G

* m0 V+ t# G7 N) i$ w' Pthen c is 1 $ e4 U1 ^  B3 n! E+ `1 }; r

& j! W+ ^" J7 y$ U1 `+ D- ca = 2 - b 8 v6 i1 y1 [/ S  }6 r2 b

( ]& M9 _1 S/ S. e( q1 `! u& Cso 0 = 0 : V& H; t! _* f6 |, T) Z& L
2 }8 X; o7 G5 E& k1 ?+ g# A9 ^; _! }. o

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) b9 |1 i. x$ A
冇答案ga....
+ J* n0 d: S/ }/ c  z- {$ @5 h1 n, O1 r. B3 E6 f; g
2條equation solve 唔到3個unknown ga....

+ F0 t1 v; |0 R8 {' u9 c( p/ x, A8 t

4 V$ Z  b1 E! X9 `5 E此言差矣~4 s8 N+ p( d: C( R% R$ V+ e- I) |
6 _  H" J8 c/ b0 K
2條equation solve 唔到3個unknown ga
; t6 u* m4 f( R還欠一個條件,就是3條equation都是linear independent(線性無關)的& c% ^* \% A; R+ c6 u
( J/ z- q( o% o' ?
簡單點說,多元一次方程就是線性方程的一個例子. E% x' A9 G- i6 F% ?/ f/ I
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. P; l/ f# h- J+ k5 D  y' l

' ]. H: c2 v( X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~)
3 R% v* Q. u- ]' p例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
$ l( M/ r# H9 a" j7 z有興趣就解解看2 H9 x' D; U8 j( d* ?+ t
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
& S* B$ l: C. N+ e2 R, c+ C
( ^/ L4 @6 d8 c$ L8 V+ ?+ u' `
" ]. ~' k6 S: \( u. s3 D不懂的話就問playplay,佢會知答案

4 Z$ ^. @6 C( }, b/ \: o

+ ~. @3 U6 j$ k* e( f

playbr2

Originally posted by sakura310 at  06:47 AM:
2 G1 b+ }3 E, w2 Q" _捉錯處就唔敢當5 ~6 `( q0 Y4 [  ~
不過,c=101n哥度(解...

- J/ C, n! X( g$ k( C; e) e2 O+ T- W) H: b& t. R
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0 |6 T, `& m% @) S9 a5 M
反而適當地調節一下 , 咁會理性好多
9 v( v' N- Q2 E' U' @- G3 ^2 H, m就好似隻game 由12粒珠 加到13粒珠咁
% v/ R8 X" T2 }" A+ j5 v當''堂''好玩哂
: W/ ^/ k- Z/ M8 e2 A+ w. d, k! D* \/ m9 b. Z: j' M* o4 L. n( Y  r
p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:  S6 I, p. G% W

7 `  P: a- y# b7 V0 u* }( H" o: ?: j9 v# o& V" A
p.s. 求''堂''字正寫...

5 }; ?1 u) \/ I
已是正寫吧