sakura310

Filename: DSC01158.JPG
  ]5 K. p8 u. O' I1 Q3 x$ Z5 d9 WDatetime | Downloaded by | Counts6 o; ~9 N- G4 S- a/ i
2008-01-18 00:25:24 | 阿感 | 22 _* c; Y, S7 [
2008-01-18 00:24:20 | playbr2 | 2! V% R# y5 c- h4 j
2008-01-18 00:22:02 | 但丁 | 23 ^4 o3 g3 ^  `. e0 n* {. b. M1 q
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
1 h: i9 ^. D) N; OFilename: DSC01158.JPG5 w% n9 o) a% \9 [/ @6 e: d
Datetime | Downloaded by | Counts9 }* t  \2 A+ |; ]2 \# u% H* i/ D& A
2008-01-18 00:25:24 | 阿感 | 23 m) D& m0 \$ _. X- A
2008-01-18 00:24:20 | playbr2 | 2
: t6 F4 k8 s+ [% ?9 R9 {2008-01-18 00:22:02 | 但丁 | 2
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+ i: `& _/ r8 c1 c' ?9 k. x, R, g點解大家都down兩次? XD

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! @/ ^9 ?, O5 J我第一次開睇左2秒就close 左% O. X. |0 [2 D* W$ M- N  V
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
: `* [: A. {& H. m  `Filename: DSC01158.JPG: W, s; k# A9 C
Datetime | Downloaded by | Counts1 U5 @  M8 T/ K+ i5 Z
2008-01-18 00:25:24 | 阿感 | 28 O5 a3 u& M$ M0 U: c3 @4 V! S
2008-01-18 00:24:20 | playbr2 | 29 a  R% t4 h  B+ P
2008-01-18 00:22:02 | 但丁 | 2( M$ k2 N2 I! Z4 u

" g6 ?% ~. U" o+ A) e' ?( w  I; Q點解大家都down兩次? XD

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快d捉我錯處0 C7 M! P0 f$ m
話吾定我都打錯 + - 符號" H% H9 t" w4 d9 S4 k) _4 Z
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
7 a' [5 u3 i7 [8 c3 }8 h8 q不過,c=101n哥度(解除n係正整數的限制,只是整數)
  B, g  e; w* ]4 e  g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~)  F' e' ~- m$ [
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
" d2 b! c. G" g+ m  n9 ]3 X1 K# i但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
7 _( K1 u; R  ~+ l! D+ }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
7 N4 u# R. j1 H2 X6 a, D: y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....0 f; t' l$ z4 q4 n: ]

3 k0 K! T6 Y. `2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:8 M9 q, Y2 v0 p' Q- L2 y: ]6 V' m
冇答案ga....$ {, C2 V) l, r' ^( b" {- H3 Z" S

9 `7 \, ^: J  r& N. n! ~2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows
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& M- _: f' O. }! V* B9 }if 3 unknows there should be 3 equations
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. K8 Z  Y" [: [& S6 i/ e/ a' Umake it simple
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2 g# r% Q; Z( V7 zsay
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  `2 p3 v7 d# n' ta + b +c = 34 H- w6 R9 J5 P. `
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a+b = 2! ]0 s. E" ?1 J- m/ z
6 {+ a/ u5 E$ t5 ^
then c is 1
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a = 2 - b 6 E1 k" B- p7 Y$ a, y" D% v1 H3 ~# o

. @5 P) }9 v9 c9 [* Gso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
& A3 `. \  `2 u冇答案ga....
$ J' Y2 P+ \4 y9 g
8 K' {  |" D' p& d; Y* }2條equation solve 唔到3個unknown ga....

7 M  W4 w+ H( o+ [* L+ [1 R/ G9 d
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此言差矣~2 a, E: y. F! ~3 |$ W/ d5 L
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2條equation solve 唔到3個unknown ga
& A$ t0 y1 v5 r3 f- ~% [還欠一個條件,就是3條equation都是linear independent(線性無關)的
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簡單點說,多元一次方程就是線性方程的一個例子0 P, r2 i7 Z% ~1 r  R. ~5 A' `, z
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6 @% }; V. V, A1 i# h
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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~)/ d) V6 x! q; E' d5 M# f# S9 q* a
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解8 \1 M: k8 \4 Y) v2 u5 {
有興趣就解解看0 O- Q4 `& I" f$ R1 o( e/ J/ n1 M$ a& _
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:* S! H. T- @, c3 T1 V" T' @

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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:2 C( W, |% Q5 X7 k+ j9 E% G0 g4 Z2 r
捉錯處就唔敢當
1 W" @7 p8 |) i0 t不過,c=101n哥度(解...

. y. p" c  ~7 n( c5 P; k
5 j4 o/ B! j+ e$ O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
6 n* a% u& T  v) m$ p' j' r反而適當地調節一下 , 咁會理性好多
( N7 z- R# q# Y2 L就好似隻game 由12粒珠 加到13粒珠咁) T6 Q1 i" @& S- j" c
當''堂''好玩哂9 q2 ^# `9 {1 W  T! V( |" b& B# A$ }

. o* {  p3 o3 g/ G8 {! a0 Ep.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:& e7 O$ ~9 c: \0 |3 e

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: M( v6 k4 d  A  Wp.s. 求''堂''字正寫...

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已是正寫吧