sakura310

Filename: DSC01158.JPG& F1 p) @6 C1 i) Z6 n3 v+ s
Datetime | Downloaded by | Counts* K0 _/ @2 q/ M6 t; A
2008-01-18 00:25:24 | 阿感 | 2
6 U4 l/ ~5 X: D, H# g' U- v" i2008-01-18 00:24:20 | playbr2 | 26 b3 y2 @  K; ]; w; B( @
2008-01-18 00:22:02 | 但丁 | 2. U1 H1 I0 E* I2 r1 \( `7 i
" ~" w+ z2 N0 [+ p, k# ?
點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
+ T7 }! T% Q8 v. q9 K6 h3 SFilename: DSC01158.JPG# ^* x* E3 T) b' `
Datetime | Downloaded by | Counts5 V7 d7 s- x* ]3 h4 H
2008-01-18 00:25:24 | 阿感 | 2, i  y& \. D  a! @1 k. s8 U
2008-01-18 00:24:20 | playbr2 | 2$ P5 m6 U4 w2 I; h
2008-01-18 00:22:02 | 但丁 | 28 [$ m: h7 B. A' o& F* v

$ C* X2 g7 L) J. u2 G/ Z5 P點解大家都down兩次? XD

* C  K6 x( a' ?6 v  ?7 V! \. \, v$ g
我第一次開睇左2秒就close 左: y( }2 p9 }3 n' r
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
7 b, a- W( P3 O; k9 j0 F- f5 iFilename: DSC01158.JPG2 b) {. v; \  V0 p
Datetime | Downloaded by | Counts
: j& s: l0 ~5 U  h# Z2008-01-18 00:25:24 | 阿感 | 2
& G8 `- M! w, u2008-01-18 00:24:20 | playbr2 | 2
! [# g7 j/ t& Z) _/ C2008-01-18 00:22:02 | 但丁 | 2
# k$ b9 ]1 k0 z
8 ?+ ^" o. @' K2 a點解大家都down兩次? XD

/ ~8 p# f6 e9 d6 Q! G' R( C5 p- {) C" r: B3 R+ X5 p
快d捉我錯處# v4 ~- j7 k5 ~6 Q: `
話吾定我都打錯 + - 符號
3 ^# U" P: q- J; h; \" b係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當- V6 P% v) l" b
不過,c=101n哥度(解除n係正整數的限制,只是整數)
6 M9 S7 D5 K$ v' J0 [9 H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~)3 o; s  I  I; I5 _- s. Q
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題+ w: c6 a7 q( }1 E' y% I! c. L
但原先是不知答案,所以唔知有無失根' J$ Z0 g; {/ p, k- m

; \, }+ R- G$ }7 _* w/ x有時見到題目都感到有點不爽! J* ^/ C6 Z; x- [  e: U
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
4 X2 ?+ r5 r$ e5 c9 k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....
& s2 C/ L; [0 @2 i" u, Z: b9 M
9 X4 K% i4 i# c$ _2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:) q% L( ~$ K) a* D
冇答案ga....
: p, y, j9 f. T! C" _' q! [. @: z+ G0 q
2條equation solve 唔到3個unknown ga....

" t; _) l% B3 q+ o6 p
" G& D1 q: b. ]agree   z6 f( n7 N; h. A0 L' F

6 g# o- K4 Y5 k# r7 Z5 H7 Q2 equations 2 unknows7 S3 S" |! q. f

+ p! V! q( i  i4 j1 g/ U( T5 dif 3 unknows there should be 3 equations . t0 [: p- C# T. F+ {3 w

; ]8 N; x, X+ [$ cmake it simple " y" w3 j5 G. c# b# k% U$ s

' V+ L& l3 k. {4 fsay ( ?+ @9 C6 v, D1 X# X

- a' T/ C) V$ |- }a + b +c = 3) x) k& {; w6 _9 L

! b" \* m* |& b% m; p3 V# Xa+b = 2
6 P; @7 E! r- q$ y
' v, G1 n. `' ^0 Athen c is 1   N) H. x. b4 ^: i+ |
% A/ E5 W) B4 l7 [- \
a = 2 - b : O& l+ M7 c) r  a; X! ~

# K: p& y* @) i% B3 w* u7 V& zso 0 = 0
, f5 s/ K, z% s/ o/ L* W1 L' n# U0 G

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
6 P/ ~& a! J0 x冇答案ga....
1 E# G$ ]. [. ?3 M. S8 K
- d8 p0 b& V% R  d8 M, q2條equation solve 唔到3個unknown ga....

3 u- r" h1 U2 b

& F1 w# o4 j9 h+ G0 [此言差矣~, K: V! v5 _# o  t( t8 @! X8 L
( u: P, j) G: ]2 X
2條equation solve 唔到3個unknown ga+ V3 e, R, o* H. m4 U4 S7 F6 w+ x
還欠一個條件,就是3條equation都是linear independent(線性無關)的  O5 O* @/ _. X4 g2 A) u9 G

& j0 y3 J0 l# F, z簡單點說,多元一次方程就是線性方程的一個例子" h$ n; O  n6 w. B5 d; k( u
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
7 o  X! s- p2 w1 \* o8 V' J$ {: Z9 N# T6 K5 M
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~)
2 p6 I! H( B! W* Q7 g$ |例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解* j( w8 g! z* |0 {
有興趣就解解看
  e% G$ ^* _+ Q' I2 P0 N- c不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:% G7 b8 T% _% _) @$ D

$ }0 [6 j/ Z: @5 r' K3 i0 F. Y# `+ @1 \: @; A- \! O
不懂的話就問playplay,佢會知答案

5 p$ j, t0 o! ]( u) x1 j/ a- r4 w) T# R
/ E% ^) y- Z! N! Z; Z

playbr2

Originally posted by sakura310 at  06:47 AM:! {8 [; e% B+ {2 a  @: d, C* z# r# @
捉錯處就唔敢當
5 _  _  F. I$ E; |& _. e+ P6 a不過,c=101n哥度(解...

2 {9 L9 A# T8 w; e

6 M2 s* k' a) k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
" V' g2 b+ X# y8 i& J$ N  o反而適當地調節一下 , 咁會理性好多( |6 O- h' Z( p! A, r3 P% b/ C: ~
就好似隻game 由12粒珠 加到13粒珠咁
1 P  R$ G3 D2 c2 b當''堂''好玩哂# ~) V! S) Z, d0 k6 W; e9 C

" v7 y) ?$ {4 ?. k6 L, dp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
: D" C4 t" R' j
7 V+ O" N9 K: c
- `1 q2 Q3 K" _' ?5 |& l9 l: Xp.s. 求''堂''字正寫...

# \" M2 |) j! N已是正寫吧