sakura310

Filename: DSC01158.JPG
  c# K" h3 j7 a* u1 x0 P5 VDatetime | Downloaded by | Counts
0 @5 i  V  a# C/ i7 h8 D4 W9 [7 b+ Q2008-01-18 00:25:24 | 阿感 | 27 }1 I' n( ]; K6 g* F
2008-01-18 00:24:20 | playbr2 | 2) K* U& Q8 E; q5 A2 e* \; U
2008-01-18 00:22:02 | 但丁 | 2) U" s' b) Z2 ^; s1 V
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:! R8 {& R; H* x/ f0 P( c
Filename: DSC01158.JPG/ z. h$ X% A; ?' p
Datetime | Downloaded by | Counts! h, u- ?5 f, h6 {" A
2008-01-18 00:25:24 | 阿感 | 2
2 h6 O0 E6 v4 w% \0 m0 w2008-01-18 00:24:20 | playbr2 | 2
, q1 K) f0 @" y/ B9 u2008-01-18 00:22:02 | 但丁 | 2
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2 @) t  E- x7 y( [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
; }, a3 X, k  [6 s6 L" [之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:3 g5 O7 k2 e9 h1 E8 N, c5 ~
Filename: DSC01158.JPG) U6 K# V& I( o" F& E7 q
Datetime | Downloaded by | Counts
7 a% B$ R7 X% V# {2008-01-18 00:25:24 | 阿感 | 2% `( U* B" \0 H, Y! c' b
2008-01-18 00:24:20 | playbr2 | 2
4 y2 l7 N  s( F$ K" I; A2008-01-18 00:22:02 | 但丁 | 2
2 X2 ?6 s( W  d3 X+ [/ O0 K+ [- _0 ?4 I- n; c" c3 l
點解大家都down兩次? XD

% h8 b, x* F/ q& G6 Q: _$ ?; q. D# y
快d捉我錯處$ [' W* a/ L8 C6 f* R2 f  j! Q' e
話吾定我都打錯 + - 符號3 B$ q1 A2 d2 }# t/ t- g' p
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 m! T% P8 J( y0 Z- k' A6 Q不過,c=101n哥度(解除n係正整數的限制,只是整數)' n) h5 W; J0 f0 S+ C8 m
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~)0 N6 P( l" g. Z
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題" C* q' ~$ t! Q! o0 u3 f; ^
但原先是不知答案,所以唔知有無失根) t8 V3 T; H8 }  I; E) I
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有時見到題目都感到有點不爽1 Z. ?8 [% O8 D: t0 A
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5 H7 P7 `: ^! L: {- ]4 v& f* 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..../ }$ c: s( U0 _( H, K  j$ Y
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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:3 l9 l) J7 s$ J; O6 F# G% S8 P
冇答案ga....
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( E1 o7 I# N% ~! V$ d2條equation solve 唔到3個unknown ga....

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agree . g' A% T& h1 v3 \8 R

: A) D; p$ J+ O- S& j2 equations 2 unknows' F- ^9 S0 v! C% R

0 D8 C" z# \; Y9 Uif 3 unknows there should be 3 equations # s2 ^' K2 [- ]+ g; E% v8 C% V
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make it simple 6 M7 d' J( [% ]. P! r0 r

8 E, W* b- q, I8 {; `say / c" E- l  b3 w0 X7 f
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a + b +c = 3
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a+b = 2
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then c is 1
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, P" J5 N) E2 V' y* ua = 2 - b
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% V# c' H! G) l+ @3 [) Z* A$ ?so 0 = 0 5 _8 ?8 Q; w! M- z
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) ?8 d- u# w- e" h5 ~
冇答案ga....
/ {3 [1 Y  ^2 p4 t% B$ v4 Z% W  r( l+ d
2條equation solve 唔到3個unknown ga....

7 ^! f0 r0 u  z

5 H$ D. ?0 o, ?5 V此言差矣~
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' D% l" s4 j3 L0 x& `2條equation solve 唔到3個unknown ga& ]4 T4 e+ O/ a0 ?
還欠一個條件,就是3條equation都是linear independent(線性無關)的* A4 q6 M& W5 U

$ u% ^" T( s! j* g6 |: o簡單點說,多元一次方程就是線性方程的一個例子7 X+ T) ^, ~: n4 q- 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
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1 C+ d1 B# T) j& H8 k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~)
0 Q6 M, c6 o& ], X/ R例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解! x5 M2 [: Q3 s# R# N" W
有興趣就解解看. k% x: j4 b/ A% H# p
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:1 a. O+ z; R; G8 p( p, n7 G
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# R" ?$ @" i9 N0 q, H3 M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 n% ~& s9 I" V* x1 |! G( [
捉錯處就唔敢當- r8 I5 U% u0 ]1 J
不過,c=101n哥度(解...

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1 _4 K! z9 D% v9 a6 D) h+ a. c' h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
: ~7 C; b, a# [8 d反而適當地調節一下 , 咁會理性好多
- ]: L& }1 z5 n* o就好似隻game 由12粒珠 加到13粒珠咁
* I; D( ~& x% {4 S9 v* e$ W當''堂''好玩哂
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+ _: o, r- b3 A, ~p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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" H" ~! W9 {  B5 |1 ap.s. 求''堂''字正寫...

, H6 G1 |, ]6 W! h% X. F: {3 z已是正寫吧