sakura310

Filename: DSC01158.JPG5 r+ _  Y9 O9 t2 m( s  F7 k
Datetime | Downloaded by | Counts
, [( I$ G6 m; b1 {, H( Z' B2008-01-18 00:25:24 | 阿感 | 2
3 h1 b# G8 w& P3 ]2008-01-18 00:24:20 | playbr2 | 27 ?5 b: M+ J  C( A( [+ D: p/ Q
2008-01-18 00:22:02 | 但丁 | 2, e; y( `: k' A8 Y! ^; ?, D6 W1 S

$ t, n, ?9 s) _" c0 |點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
; h* g0 k" I+ A5 v$ \Filename: DSC01158.JPG8 L8 f0 x% W! f- G7 I' A/ n+ R
Datetime | Downloaded by | Counts
( o1 h" S7 S8 w4 o# e3 Z* ~2008-01-18 00:25:24 | 阿感 | 2
* n. Y9 B% F2 m. N  ^2 T' A2008-01-18 00:24:20 | playbr2 | 2& j! t9 t* @1 Q* m5 ?
2008-01-18 00:22:02 | 但丁 | 2
' M- A7 L4 V6 c5 c) ?+ S5 f; d1 ~$ o/ R/ r6 |/ \
點解大家都down兩次? XD

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我第一次開睇左2秒就close 左
* e( J$ k/ \  q! h$ y" E5 y7 j: ^之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:9 w  T+ Y. C  q% [' L, G5 x
Filename: DSC01158.JPG( I/ t# [) C5 n
Datetime | Downloaded by | Counts* T9 ]: \: I5 g+ V5 ~9 l
2008-01-18 00:25:24 | 阿感 | 2
4 v+ O7 D% Y. v4 N$ |2008-01-18 00:24:20 | playbr2 | 2( l" x. a" r. G5 e
2008-01-18 00:22:02 | 但丁 | 2# y0 f- h) M$ V. Q. F; z# Y6 Q9 m# ?
) F" h' y' v* r, e" h* _. F" _
點解大家都down兩次? XD

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+ `5 r3 ]- M1 R
快d捉我錯處$ \. q/ @& C0 U- H9 l2 [
話吾定我都打錯 + - 符號7 r6 k( I' H: J  |/ J
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
7 i( e$ U6 j# `2 z不過,c=101n哥度(解除n係正整數的限制,只是整數)
4 S& a% \' E3 x! p! ?/ x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~)
6 I, `, B4 v& R2 U知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
# W( @" b( s! q* |但原先是不知答案,所以唔知有無失根
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4 O8 ]9 n" A  \8 X有時見到題目都感到有點不爽
; a; F  e9 y3 N6 q1 K7 j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9 }3 }# v2 x( l" }3 [  e0 s
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....7 N- d" C+ b4 h: A

: o) }+ O) v: g, j' R  o  i0 N2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:1 n- o% e* |- I  Q/ x
冇答案ga....1 M! i- N! o. S: l0 j3 l1 I
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2條equation solve 唔到3個unknown ga....

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agree   U/ h7 X' e0 {! Z
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2 equations 2 unknows
0 t( K; T* \& {2 v) e9 F* i5 g; T3 {0 S) a6 h# G& D) [
if 3 unknows there should be 3 equations
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1 j8 j) B; u. |6 {6 qmake it simple " L0 r3 O5 Z: F5 Z8 m1 M

$ u4 b7 {) O: T4 K- O+ R- dsay
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a + b +c = 3+ L& h9 b! _" N, }( P

% c4 q+ C8 p  z5 k% sa+b = 2
0 {0 g6 L; k4 d3 B3 P6 |- W, ~4 y5 E5 M
then c is 1
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- {+ C- L5 C% x; \a = 2 - b
, E0 n* k, T/ u  c" ]8 O9 z( ]+ B/ m. r9 X- p
so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 O/ Z+ U3 p4 H" Y0 W- U
冇答案ga....
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* ^! f1 R5 p- i  m2條equation solve 唔到3個unknown ga....

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此言差矣~4 I: O: J5 @5 ?' Z) m8 K4 U" v( h& L

2 i: U- i. y  {' p6 ?* F3 M! H2條equation solve 唔到3個unknown ga
3 w, g! \$ v3 K還欠一個條件,就是3條equation都是linear independent(線性無關)的
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, }" j. z* i' J0 {: Z7 {  B簡單點說,多元一次方程就是線性方程的一個例子
" U! w/ ?1 R1 J+ n' F# R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. E7 J. n* e; ?) O6 B

, m0 T* S: Y3 \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~)7 ~2 _5 d( N/ z& q( i, K1 E
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解$ p" n# n) Q2 y' S! D/ h' F& K
有興趣就解解看! `. `% `0 O( v3 P, k& [
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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不懂的話就問playplay,佢會知答案

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playbr2

Originally posted by sakura310 at  06:47 AM:- d" {5 ?/ v* h( L+ r
捉錯處就唔敢當
9 p5 C& i3 U* s1 f- m0 q# M不過,c=101n哥度(解...

$ R6 H* i0 H) p9 a
& b1 y8 u% K! J8 @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& F6 P& L& R, d) ~* F" G
反而適當地調節一下 , 咁會理性好多8 ^0 ~& v( e" ^
就好似隻game 由12粒珠 加到13粒珠咁
0 |6 B% `1 G: k1 V6 q! W當''堂''好玩哂+ Y/ i. B6 _( Z; n

7 F5 z3 f4 L) _! }p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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6 |; q5 C7 \8 a" x) {, w% k* [p.s. 求''堂''字正寫...

* p$ h" K$ t+ p已是正寫吧