sakura310

Filename: DSC01158.JPG, s( h: k/ q0 ^8 f! }
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2008-01-18 00:25:24 | 阿感 | 2
- E% n* `$ E+ A4 ~1 h9 w2008-01-18 00:24:20 | playbr2 | 2
$ [) n3 ]+ `$ ]- I. v1 ]7 \2008-01-18 00:22:02 | 但丁 | 2" x3 d. F; g3 {4 z6 U* }

! W4 D# E1 _- N& F& B點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:5 a# m2 k5 x/ v# F, A. ]! ?
Filename: DSC01158.JPG
* P8 V% B/ v8 `  S3 ADatetime | Downloaded by | Counts' U! h! X0 _' ^
2008-01-18 00:25:24 | 阿感 | 2
( N* X0 G- I# X7 v. e9 c2008-01-18 00:24:20 | playbr2 | 2
/ z1 O3 x( j0 W2008-01-18 00:22:02 | 但丁 | 2
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. `6 r+ A( ?4 d/ Z. F點解大家都down兩次? XD

5 v( _- j, U: Z9 O/ D: ^  O* Q; l: ?/ c
我第一次開睇左2秒就close 左5 n9 S. i0 j( V2 B
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
2 t1 A: H4 N/ ~. D  f& gFilename: DSC01158.JPG
2 B* N3 I  [1 r4 {5 u& T  P; @Datetime | Downloaded by | Counts( [9 p! p  G0 r6 Z* g8 U  O( B4 R) M" {
2008-01-18 00:25:24 | 阿感 | 20 |0 T1 \( _/ j; a7 o4 W; x
2008-01-18 00:24:20 | playbr2 | 29 u) Q& @# ?% d+ D$ J
2008-01-18 00:22:02 | 但丁 | 2
# ^$ {. t+ d  W: c6 r1 Z: G! x3 \7 y- K+ p9 X
點解大家都down兩次? XD

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7 Y# B8 u% t/ U. n7 x% X1 |快d捉我錯處
9 K$ K* A! s4 }8 v' S話吾定我都打錯 + - 符號
/ b1 |, I: E' A) g( Q) b係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當4 O( l7 b9 h7 }9 b
不過,c=101n哥度(解除n係正整數的限制,只是整數)
5 y& h% b, K* ^+ Q4 U: _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~)
+ k! e" `! _+ ?4 T6 o: A; I0 l6 E知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題* z5 g6 M$ j* z2 A/ ~9 F2 y
但原先是不知答案,所以唔知有無失根/ }' `0 n; H& t' {- L* E

' h' L5 ]. |3 Z4 b. e* w有時見到題目都感到有點不爽
$ |+ N8 W5 }3 A$ T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
! s7 T% W+ e, \$ l+ Q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....6 a( T" c4 N3 z# o

5 t1 A2 L* ?8 ~1 p5 s2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
2 K/ o1 J0 _9 D  R1 ]0 j冇答案ga....
# s1 e% M3 z3 `% b! t2 h5 M' R+ P
: n$ w- g( L% w/ ]5 u2條equation solve 唔到3個unknown ga....

# ~. \$ {% [7 f3 K: F/ k
8 J) Q! Z/ G4 E* S: [agree 6 Y9 r) e1 `8 U, R

) U1 a( ~; L8 P# U2 i. O. O( c2 W2 equations 2 unknows
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2 P  [6 Y, M% A3 ]" Vif 3 unknows there should be 3 equations . f, ]" @! S. Y( i' A8 J9 [
+ A7 E2 U: J3 O9 A2 e5 t
make it simple
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+ j/ }7 @' |/ V5 h' Hsay
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- P) l2 U9 w/ r' ?  Ma + b +c = 3
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a+b = 2
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then c is 1   C8 N4 F0 N; S: s( Z8 L% J# f1 k1 P
  f; \; [( {3 d% U" O3 V
a = 2 - b ( v4 F- C& n$ c' }. A6 z0 \

* C& D6 T2 o" t$ aso 0 = 0
6 ]) C5 k9 V3 E6 ]1 |# [' n; h0 s1 B% G$ ~' u- a+ q7 [. T$ P

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
( Z, H1 H8 {; s冇答案ga....4 c9 o6 n: ~: a. a

6 S/ b4 R. W/ r8 u- V7 |$ j: v2條equation solve 唔到3個unknown ga....

3 k" S7 |' U" T, {6 S+ N# Q/ ~; ?0 T$ `. e" m6 I: Z
此言差矣~& I7 {. _0 L: @; A+ Y1 _

0 }& B/ g4 m5 n4 l2條equation solve 唔到3個unknown ga  S0 B4 d: ~5 u' ~) C8 W3 c) v% x
還欠一個條件,就是3條equation都是linear independent(線性無關)的# B9 W4 S- t# n2 r4 Y# c

$ K$ s. G% ~' @# G0 C簡單點說,多元一次方程就是線性方程的一個例子
  J4 d% w) H: {1 c+ u& d" T) 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
2 i% T6 L+ c8 {* t' A: K& I
" ^* s0 I- t( F% C2 l+ ~4 ]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~)
# B6 j. F' Y3 E  `例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# C- H7 a& u- Z% Y3 I, f; M有興趣就解解看- ^2 h* x* m, L# ~  `. f0 _
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ g+ t& Z! J. J2 q+ R* Z( P
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3 L- ^. g* d# `5 L1 [8 i  G, [
不懂的話就問playplay,佢會知答案

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3 c/ u( O5 o$ Y  l8 c

playbr2

Originally posted by sakura310 at  06:47 AM:
4 M( U4 z) h6 _/ K. J6 A- A# c捉錯處就唔敢當3 k0 L! G+ o; j/ i
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1 K1 w  a7 O, z6 D5 U
反而適當地調節一下 , 咁會理性好多; p) v) C( C. `! a
就好似隻game 由12粒珠 加到13粒珠咁
: B/ |5 U+ X( I- W$ q2 J( S當''堂''好玩哂+ _/ H2 j# T0 n* U
1 s. s  n. p/ b) I
p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:  W4 P; d1 T/ N" L( V/ n

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# z! q/ C+ F) d* ^9 rp.s. 求''堂''字正寫...

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已是正寫吧