sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
5 P$ U; z; Q3 `4 z" r* X4 k+ E6 ?2008-01-18 00:24:20 | playbr2 | 2
4 {0 @2 f: v8 l2008-01-18 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:
2 b+ D0 a' Q" o+ k' O1 i& D1 FFilename: DSC01158.JPG
" ]( F9 P9 L) F, Q9 r6 h% uDatetime | Downloaded by | Counts8 A  C3 q; T% [+ @* x9 C) E- o/ o
2008-01-18 00:25:24 | 阿感 | 2$ I. L0 j  ]  r6 Q: d9 u
2008-01-18 00:24:20 | playbr2 | 2
5 m1 e' z, O. m4 o2008-01-18 00:22:02 | 但丁 | 2
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* B" d; Y; c, p1 |* A# r點解大家都down兩次? XD

6 k" C6 L, A5 c
; ~5 }3 {. {# c. ~我第一次開睇左2秒就close 左
+ y$ S% p7 _3 y3 @之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:0 q) p4 P* l- c6 C2 C/ R
Filename: DSC01158.JPG
" D3 t$ z" Z' P) {3 T: Q, c: [0 ~Datetime | Downloaded by | Counts
  ~0 `& ~, I- `- g6 q& |+ l2008-01-18 00:25:24 | 阿感 | 2- `$ N9 V9 e$ Q+ h+ |9 d
2008-01-18 00:24:20 | playbr2 | 2
: S( X6 m7 \+ t, U" Q* }+ h2008-01-18 00:22:02 | 但丁 | 2, o2 w8 H0 s( p
5 y$ @. x/ I) g2 q% o5 a
點解大家都down兩次? XD

: N  c' c$ F( e/ T' i

7 k* c5 [9 V. s快d捉我錯處; d5 \' E( \" K/ d8 [: l
話吾定我都打錯 + - 符號+ ?" f+ K1 M2 X3 T5 G5 @
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
- y- Q' X2 Q" a不過,c=101n哥度(解除n係正整數的限制,只是整數)
3 J$ ?4 y# a6 @% C) d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~)
9 J0 T( C0 j; W$ w知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題! i  j2 T1 f- s$ |8 V& p2 T2 g
但原先是不知答案,所以唔知有無失根( Q) n4 \  u; V$ T3 V$ U9 L

0 M: D# k# H: x- |, I  r$ E有時見到題目都感到有點不爽1 j) w5 t' ^  O' J/ V
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
, m5 k: m! K8 k0 T; Y/ }( {/ g# `/ 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....) T+ S. g3 z/ A1 b) h
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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:$ l0 P2 H" \4 E, W* g! X7 w2 d
冇答案ga....: {6 e/ P3 x0 z9 X5 Q

! I' P9 Q9 B* N! Q- b- v2條equation solve 唔到3個unknown ga....

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2 equations 2 unknows
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1 Z' v) _) X# p8 `; y, v! c0 l3 \if 3 unknows there should be 3 equations ; q' q- [9 q& c$ w& [3 e

: Q  G# H# h; h& k! T) \' t0 Tmake it simple
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a + b +c = 3
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a+b = 2* y  w, O! i1 z1 k& E7 v
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then c is 1 6 d0 ]' i/ ~  B( M3 |$ B' t
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a = 2 - b
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$ L6 M0 `$ f' s* e4 jso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
  R9 w' E" X+ b冇答案ga....
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2條equation solve 唔到3個unknown ga....

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) p0 h1 E4 ?4 X6 }此言差矣~
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2條equation solve 唔到3個unknown ga, a. R, c6 \5 ~( y5 D3 h; j1 o+ j' 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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- m3 Q0 M! a' `, p, N1 t簡單點說,多元一次方程就是線性方程的一個例子2 |. Q% K7 y6 U( D
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% D, I; R' }/ p, A  E

: ^0 S  y4 m- ]  M! J) c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~)2 |' N4 N0 z) T# R8 Z3 \: C) R
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解+ B% |0 A, A7 x* L% [
有興趣就解解看
6 r3 x( @5 R, S6 i# ]' z6 h不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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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:
: {+ }4 U- A/ J% S捉錯處就唔敢當
% a- J  o7 p( q) ~4 C' M/ N不過,c=101n哥度(解...

+ C( q' E  f3 K

0 }1 ^8 Z! u' V8 R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" b- N, l4 v+ o; ~) A4 N) q
反而適當地調節一下 , 咁會理性好多: Y1 l; f& a9 l( M$ E6 _
就好似隻game 由12粒珠 加到13粒珠咁. o! I7 x. Y$ v( Q  b$ c5 t
當''堂''好玩哂: U  m- T1 h' d: ]8 x, c, p
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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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; G& ~' z3 E& n$ ]p.s. 求''堂''字正寫...

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已是正寫吧