sakura310

Filename: DSC01158.JPG( q" y. M/ m5 q
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& S, _1 n' }; m& n- [: t# n2008-01-18 00:25:24 | 阿感 | 2
4 h' _- ?5 h1 f8 f, z2008-01-18 00:24:20 | playbr2 | 28 J  {2 A9 c5 ~% l  {* h
2008-01-18 00:22:02 | 但丁 | 2
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- j) W% D) E" ^; R% T點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( D; `- |& ]8 Y  H
Filename: DSC01158.JPG
  R% ?& I" H8 _$ [( @$ W9 s( X1 wDatetime | Downloaded by | Counts
: u6 k' g: L# {  X, a2 x# V2008-01-18 00:25:24 | 阿感 | 2
: }5 s/ g5 G% V, c* m2008-01-18 00:24:20 | playbr2 | 2
) E9 v0 M, M, ]  `4 o6 p7 u2008-01-18 00:22:02 | 但丁 | 2* n- u" S5 @  [1 ~9 M- d* p

% |# k" i3 W- \6 @" d. g& n點解大家都down兩次? XD

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( l7 y. \& U: ]& l+ Y* B我第一次開睇左2秒就close 左0 @- G, _+ H9 A7 Z" `+ n
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:; c9 [  J! b. f5 _0 O0 R
Filename: DSC01158.JPG
# ?) u/ {+ s6 [0 y0 G6 WDatetime | Downloaded by | Counts- K' M/ B: R; S, h- i0 `( t
2008-01-18 00:25:24 | 阿感 | 28 X9 z5 m/ x. R7 E) Z8 z
2008-01-18 00:24:20 | playbr2 | 26 t9 q, g; |6 w5 z- v+ h) O' f: C0 \
2008-01-18 00:22:02 | 但丁 | 27 @; z1 p3 g( ]; B3 l
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點解大家都down兩次? XD

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( L" i) j& M% I, {& A快d捉我錯處# `4 w5 z# y1 y8 J1 i1 q
話吾定我都打錯 + - 符號
" c& x1 m$ g) g+ @係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當5 I: ~' {* L" b
不過,c=101n哥度(解除n係正整數的限制,只是整數)
. n* x7 o3 ?7 J  c$ R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~)! P, z$ z& F  s: E/ ?
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
; E" ^$ B  u* G  k6 N' F但原先是不知答案,所以唔知有無失根+ C/ @, j% P9 `( m# f  g" ?; h8 [8 P
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有時見到題目都感到有點不爽
+ y" y, [4 ^% z3 A/ D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( T$ ]" t* u  d
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....3 ^# e0 }4 u. d! ]; j& t$ ~2 p' z

. z% U% y5 D/ i. y3 Y& h' Z' w2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
- ~, ~4 ]: b: J5 l冇答案ga....* f$ Y" r3 r6 g$ r

$ _! {- B) J- F: |2條equation solve 唔到3個unknown ga....

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9 R3 C. S" e* l2 u2 r# Wagree
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$ v5 ^( A0 z, r  P' p2 H' v2 equations 2 unknows
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if 3 unknows there should be 3 equations
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- D8 @+ ^1 V% |8 D6 g4 Smake it simple 5 n4 h( }- Q8 A& c1 F, @' I) ]5 I
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say $ y8 b- X+ Q& x$ z
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a + b +c = 3/ O7 e( y: e9 K& A8 f6 S

& T9 E/ U' k7 {4 G$ K  B; A$ [a+b = 2
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then c is 1 8 k& I6 p& R0 o8 F- }/ ^/ {. A

9 S( `; G. A# a' `) Ha = 2 - b
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3 S$ c  a3 x& h" }! f9 hso 0 = 0 2 k- {8 \6 f4 o2 D* J3 d

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
$ \' b& C+ a& q, ]冇答案ga....6 I( {9 P" X8 ~
  t- _$ [4 B  [, z8 P
2條equation solve 唔到3個unknown ga....

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- _5 K- t1 B6 f& M6 h此言差矣~+ k7 P4 Y5 I$ G" i: z! b4 c3 Y- S

" B. D% q0 e% j4 z4 W" L+ H2條equation solve 唔到3個unknown ga
1 `3 [: L" O: q5 j$ Y4 g還欠一個條件,就是3條equation都是linear independent(線性無關)的6 p$ g  n$ ~3 g  ~; O

4 H+ M. h; P* y4 W5 s* z. n簡單點說,多元一次方程就是線性方程的一個例子$ h# u  `; p0 M7 v% Q7 j
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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) Z, `* b! T0 |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~)
$ z( |1 }6 Q/ [: S6 V, v3 E例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
; A6 k8 X7 U* \  ^) V有興趣就解解看
1 i5 b- j1 y4 B9 h; V- B6 P  C# f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:- t) J; H6 m, @# O9 |
捉錯處就唔敢當' H& `; e4 E: H! v9 i* Q* }
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
( d8 `5 S! |% l9 u! l4 K4 x/ ?反而適當地調節一下 , 咁會理性好多& F. J) \# f  s$ e! n8 n
就好似隻game 由12粒珠 加到13粒珠咁
3 T. l. l% D- U2 u% N$ ~9 Q當''堂''好玩哂
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# L, T0 I. {9 x5 K1 F2 A- ]: D' rp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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8 W8 Z+ X$ n- y" _6 ~7 Z2 J7 j! Ap.s. 求''堂''字正寫...

' F6 F4 @, J  s9 F! b. w* X( ]+ G已是正寫吧