sakura310

Filename: DSC01158.JPG
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0 g6 H+ |/ H8 w% b" t( A2008-01-18 00:25:24 | 阿感 | 2# Z. @0 }$ l" r1 t: X. F( o8 ~( p
2008-01-18 00:24:20 | playbr2 | 2
2 z. V) N7 @/ y$ A. K7 A2008-01-18 00:22:02 | 但丁 | 21 M  c, ^5 Q- b4 I+ A
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:0 G2 o2 U# a7 N
Filename: DSC01158.JPG
+ z/ Y+ L: K6 _: e& c/ lDatetime | Downloaded by | Counts: G+ K  G" U5 \! m
2008-01-18 00:25:24 | 阿感 | 2
' _8 m) E8 J& G  ?2008-01-18 00:24:20 | playbr2 | 2
1 V6 ]# y  A2 ]5 b. M2008-01-18 00:22:02 | 但丁 | 2
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( j" L  j/ n8 ]* K# f. Q4 ]' T0 f8 o6 x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' o. @1 _. X+ `6 _' q5 H8 _
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  [' P  @, a- c' j$ o3 u! u  f4 |8 J  B
Filename: DSC01158.JPG# i8 r6 y) \" W5 W) p7 k) j
Datetime | Downloaded by | Counts! ^, p" |/ g5 V4 ]# B, B/ X
2008-01-18 00:25:24 | 阿感 | 2
3 \& Z* C  v# j( T5 [/ P9 @% P2008-01-18 00:24:20 | playbr2 | 2! g6 h" `" E4 f3 Z" _
2008-01-18 00:22:02 | 但丁 | 2% M5 _, J, q( r# z% m8 {+ g
$ S( p" E6 i! ]& A7 }' |0 K
點解大家都down兩次? XD

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  h+ U' F8 B) R7 o8 k快d捉我錯處
/ Q5 c6 G6 `3 w. V7 R+ k: U6 D話吾定我都打錯 + - 符號7 w0 d9 P3 u3 m" {% ?* ~
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
, W. F7 L4 y2 X/ [. e不過,c=101n哥度(解除n係正整數的限制,只是整數)1 F/ q9 r$ B" K/ Z8 J) ], ?
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~)4 x  D* Z  U# W* I  }
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題% L! d4 S# t, S) e+ S; V# H5 B! W
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
& I  Q# X* D* U' U: X, D6 o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& m* o- a% Z1 W1 u& g
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....( B* a3 f3 `7 g& V  r; Z3 B- d
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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:7 u! H: k3 w2 D; q. N
冇答案ga....5 K( d0 Q: Y1 ]$ e
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2條equation solve 唔到3個unknown ga....

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7 M+ {; K+ m0 P+ U. wagree ( }+ J5 J9 f, j* h0 ]* X9 S+ n/ R

8 _& S) f" y! F) k6 |2 equations 2 unknows) v+ v, I/ L+ J& ?; \

* b$ ~& ?$ O( j9 i0 K* [if 3 unknows there should be 3 equations ( X6 R) H7 W6 C* T, X
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make it simple
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say % P7 i: Z+ ]* T2 R/ A
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a + b +c = 3( ?1 k) F# T* x$ \9 P' n; ^6 q& e

+ _7 y; h1 n/ _9 ma+b = 2
0 ~' o( L) E* s- Y, a% X1 T/ @9 l) w$ |) x& q* x
then c is 1 9 ^" T& Y& E6 f4 q" u) A
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a = 2 - b
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% A; e$ F& ?3 H0 D, S2 Mso 0 = 0 $ c, @. T3 P1 c- h, K8 U5 h

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:' v3 z# X' c: L  Z) C
冇答案ga....
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' ^0 |5 l0 r, ^* ~9 u0 M2條equation solve 唔到3個unknown ga....

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2 Y( F( Y5 g4 M此言差矣~
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: [5 J  ^, {5 s5 X2條equation solve 唔到3個unknown ga
- C1 e: x& h$ V" h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
/ F; i# {" L& r1 t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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% k# R2 P/ @  A* k3 I' P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 s1 |9 K, D: k. w: f# H
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
, J0 K$ W* Z1 C2 `有興趣就解解看
' Y1 e# ^( @0 n7 i9 S" {不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:; x4 X; x) G5 P6 ~5 A

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8 T5 ^0 \8 B1 H7 o6 ]" }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:
/ q/ h3 F2 i3 z% Q" |7 A$ W+ V5 _: L捉錯處就唔敢當( K, e- R# g; D5 W
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
6 b, Q. u1 i+ Q5 T& \" A反而適當地調節一下 , 咁會理性好多! Z3 M: w1 o" Z" c  T
就好似隻game 由12粒珠 加到13粒珠咁1 }* s7 J* J; h- p* A, o) }
當''堂''好玩哂
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/ J' J; [- t& i$ ?5 Op.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:- Y2 `- Y. a; T; Y" d- M. z
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p.s. 求''堂''字正寫...

3 D# |' h" j' S已是正寫吧