sakura310

Filename: DSC01158.JPG# Y, Z( E: x* |% ^8 ^
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2008-01-18 00:25:24 | 阿感 | 2
% l6 W- c) ~: a, Y2008-01-18 00:24:20 | playbr2 | 2
% Y% q) s  N0 _2008-01-18 00:22:02 | 但丁 | 2" g4 u9 F3 H: l  z- h+ n' ?- L* r
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
, r' k- u3 p0 y/ WFilename: DSC01158.JPG
9 H4 e8 f$ ?1 ~0 }. g; N$ H) zDatetime | Downloaded by | Counts
( ~7 J4 L5 o1 J0 G! v8 H) H) T2008-01-18 00:25:24 | 阿感 | 2
' |+ F( B  D9 Y+ x2008-01-18 00:24:20 | playbr2 | 23 z( V+ E( ?/ w8 Q
2008-01-18 00:22:02 | 但丁 | 29 J  i6 T" Y5 }

' {8 o5 g3 x8 ^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: J! h) f2 y* v# H* a5 l" D. Z6 t
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:. S; a  M5 [2 l/ V
Filename: DSC01158.JPG: g5 o, x, D, R1 b
Datetime | Downloaded by | Counts
9 }, u5 U% n0 [' C6 Y2008-01-18 00:25:24 | 阿感 | 2
0 W' G9 L/ k3 H0 G, v2008-01-18 00:24:20 | playbr2 | 2- ^8 S" A3 H. f, b& o% C% \
2008-01-18 00:22:02 | 但丁 | 26 ^4 v7 j& R. A* }

7 v5 B* G. K0 c) g點解大家都down兩次? XD

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9 {3 Q4 T4 D0 a6 O快d捉我錯處3 d% E" {9 E4 l) n7 `3 c
話吾定我都打錯 + - 符號
- u7 q5 p' e" z8 C* _2 n係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當+ u) q1 d3 y' {  h
不過,c=101n哥度(解除n係正整數的限制,只是整數)
! ]$ a( S" Q2 R5 W, n: p& U% `3 ]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~)
% {! L( d" I! s* y知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
  L6 u+ ?  I" Q1 E% C+ z" x- j$ x但原先是不知答案,所以唔知有無失根  v% Q' S3 R3 B+ F7 f: H! c# n$ L2 W
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有時見到題目都感到有點不爽: F  d6 L  m) C; C7 m7 e
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
6 m$ Z; R' y8 w' _1 C  v/ l* F+ 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....
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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:! F* b4 S# j9 w
冇答案ga....
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- O+ Y0 j! h" w' {5 H9 g9 |2 v2條equation solve 唔到3個unknown ga....

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agree # J! i1 @' z. s$ J

" c( F2 Q+ \8 }2 equations 2 unknows
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if 3 unknows there should be 3 equations
1 ?9 m4 \6 b+ c- }) A# L4 n0 r: S) L/ e! p
make it simple
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; k. @2 ^' B) H. M2 i) C$ L" usay
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a + b +c = 3
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a+b = 2
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then c is 1 ; L% Q1 [8 Q# O$ y8 D, ~5 y

. G: e2 D5 J& pa = 2 - b
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  V" X# ]& I4 w% o  vso 0 = 0 0 v; a9 t" Y5 u# q4 [0 h

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
1 s2 z' r: d# K# a9 E2 L冇答案ga....
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) o% ?# u( E/ N2條equation solve 唔到3個unknown ga....

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0 H! ]2 Q9 O& r# x2 m  N3 F' R) V此言差矣~
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& I3 I) ?$ [6 A4 q$ K2 [! t1 q# {- W2條equation solve 唔到3個unknown ga
7 _+ W- F" H. w5 U還欠一個條件,就是3條equation都是linear independent(線性無關)的+ Q5 M! T" A# d. M. O
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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
7 n4 E, d" y" a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
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* d7 F, S, I2 \* d% L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~)
( T2 ?8 R, n* x例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
; k- J$ K! e: n! w+ k+ i: I有興趣就解解看
- l) B( z0 ]) C/ k' R6 m* Z  O: C! ?不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:6 U" S+ |' d# _4 ?$ R* x. g

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" a' F( j# ^, j2 V1 R& D7 Y$ s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:$ J) s( F& y+ v, |: @8 Z; n5 N
捉錯處就唔敢當' e4 e* e3 A) B6 q* S% e, ~
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
; r/ k) X8 F4 m反而適當地調節一下 , 咁會理性好多- ?' e; Q% n! J, N7 H  H
就好似隻game 由12粒珠 加到13粒珠咁
9 S; H* ~7 u: b6 }) {當''堂''好玩哂" Q1 |( d0 i& F- F8 y: I- k  V' l

7 s3 X, K: p, i7 K* pp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:* h6 H2 G2 Z8 A6 K

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p.s. 求''堂''字正寫...

3 f) m8 s0 O, ~, V( n1 F已是正寫吧