sakura310

Filename: DSC01158.JPG
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/ j+ r$ }" p1 L9 B/ h* E2008-01-18 00:25:24 | 阿感 | 20 k3 p- b5 l: i  X* J4 v
2008-01-18 00:24:20 | playbr2 | 24 T! T0 J1 v  C) M4 R5 T
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:, n! }; v# t& v+ T: x; ?3 ?
Filename: DSC01158.JPG/ |: Z3 s, p( M3 E6 N: p$ _5 F
Datetime | Downloaded by | Counts, ^5 A2 k( R7 b) l: Y
2008-01-18 00:25:24 | 阿感 | 2
/ w. z4 |2 C& e& r2008-01-18 00:24:20 | playbr2 | 2
4 K, G, N# v% B* p9 E2008-01-18 00:22:02 | 但丁 | 2
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' n. n) \" Y4 \( A. z點解大家都down兩次? XD

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+ u% y% \$ |$ M我第一次開睇左2秒就close 左3 s$ }6 e1 E! r7 B6 [8 @
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, C6 J& ]4 [% ~4 R* b2 G
Filename: DSC01158.JPG
( @+ e5 v1 V* V! F7 k5 EDatetime | Downloaded by | Counts( o& R8 N  a2 N2 S  V) ~9 ]
2008-01-18 00:25:24 | 阿感 | 2
. l7 u- @; k' U, m* L7 d2008-01-18 00:24:20 | playbr2 | 2& [" T! V( ?2 Q/ N
2008-01-18 00:22:02 | 但丁 | 2
' @- `2 f; ]* ^, }- b9 ]$ G$ [7 _; y6 |! A# y9 y
點解大家都down兩次? XD

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- ~) S) A  W) X快d捉我錯處
5 n% V  T# k: N+ l' Y" g6 k話吾定我都打錯 + - 符號
/ X3 y* F* u1 N係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當3 ^/ u( ~( _( S5 B. \: p5 T9 o
不過,c=101n哥度(解除n係正整數的限制,只是整數)+ @& O5 `8 Z" a2 F, \
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~)! |* |* m/ S% Z3 y
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題; v- p: ~- j) f, V
但原先是不知答案,所以唔知有無失根# z' }0 k' x/ p( X; K1 ]
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有時見到題目都感到有點不爽+ T- i0 r8 s8 @  N* H  g; ?
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2 D! v  `! E" Y1 t2 u
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...." h1 D$ u4 e- j2 g" F$ o

- o+ V+ R( Q( \, g) p  O9 E% b% L2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
! N# f4 d, W9 Q冇答案ga....
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5 g& F8 Y- T: s( D& i1 ?2條equation solve 唔到3個unknown ga....

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: J8 G4 m/ j9 o! c, d2 equations 2 unknows
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8 @3 L5 R3 ~! u+ O. ]0 w% Vif 3 unknows there should be 3 equations / I5 Z0 g! m8 r
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make it simple # ~+ D  n, u# r7 h  T& h
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say
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a + b +c = 3; `: \! ?7 s6 j/ ^# ~5 w4 U3 c. u3 t

3 o  R. U* d/ M" b4 l# v  u8 pa+b = 2
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then c is 1
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, j2 G2 p7 W5 _a = 2 - b
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+ ]/ Y- k, d" m6 ~. v2 m& Aso 0 = 0 0 ~, c! e  \; F9 p+ u

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:* t( h' d7 ~* C0 w% @! i
冇答案ga....2 |, I4 d+ ~5 k" K) \: {0 W

0 m2 ?  q* y9 [9 R9 o9 v2條equation solve 唔到3個unknown ga....

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此言差矣~3 D$ |( I, `9 o8 ~, [& G) S

6 Y3 Q& r! l- v/ A2 Q2條equation solve 唔到3個unknown ga
  o% D4 I3 b7 \; U3 a8 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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簡單點說,多元一次方程就是線性方程的一個例子& K0 y% k5 h, s+ ?  T/ |& u
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& ?- U8 R% D3 q; G) n

" E: p$ e" U. S) I, z* {& [# T* e& D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~)4 m4 z' e9 R1 e% z8 q- @
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解: @, n: w" c1 s7 W& ~
有興趣就解解看  ~# \  g+ i) s, W6 V4 m
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:" U; L# S& g0 K- M% u  w4 g' d

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+ J7 A! w5 z1 U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:" f3 I8 f: q0 D. _
捉錯處就唔敢當; g2 Z$ s1 f* M' x( `+ y0 v
不過,c=101n哥度(解...

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, G" {+ {& |  C! b' q, f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
& a6 H  S8 r, O7 k3 Q反而適當地調節一下 , 咁會理性好多
9 N% t7 h; {* a$ c- j- ~& f就好似隻game 由12粒珠 加到13粒珠咁
5 g$ d9 f. o0 `1 E4 p  p: X當''堂''好玩哂
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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* m7 C$ h3 v+ J# m1 x! O9 ?! hp.s. 求''堂''字正寫...

  z/ v* g# z! E$ |" i已是正寫吧