sakura310

Filename: DSC01158.JPG1 f. @5 M& d  M( N
Datetime | Downloaded by | Counts6 F) B* \) ?- E) f# Q; \1 \4 {9 j
2008-01-18 00:25:24 | 阿感 | 2) x9 ]" b7 ?0 K
2008-01-18 00:24:20 | playbr2 | 2
, X. u% C8 O! O/ S: e/ K; S2008-01-18 00:22:02 | 但丁 | 2
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- C- I4 D  p+ H點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
" ?4 V- r6 E& k5 e3 f+ HFilename: DSC01158.JPG
) \' E, V- s4 \Datetime | Downloaded by | Counts
5 Z$ D# W- z7 H: T6 o, t! {$ Q$ a2008-01-18 00:25:24 | 阿感 | 2
, {' r3 j. q$ l  {8 h9 x2008-01-18 00:24:20 | playbr2 | 2. h5 T0 i6 N! |  N0 U% L3 G
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

2 k8 \7 n7 b8 P/ M# F$ d% u) u
$ j  u  u& y  N  [$ n+ C. s, D: W) I" z
我第一次開睇左2秒就close 左
$ m+ n4 c& Y( f" c) q  H之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:) @  e" g6 j: O- ^  C/ |
Filename: DSC01158.JPG, T- V6 s; G) L0 q) {. U7 u
Datetime | Downloaded by | Counts
5 _. m# t1 U) Z! E& Z  e2008-01-18 00:25:24 | 阿感 | 2
) U4 l, V5 A/ ?5 c0 V2008-01-18 00:24:20 | playbr2 | 2) e2 `5 E- [% B
2008-01-18 00:22:02 | 但丁 | 2) K- ]" s3 e, h; k* I" |

& E  p- O; _) n# |! M! g' ~1 ~點解大家都down兩次? XD

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快d捉我錯處+ u  t- G/ E0 K( V) B: b% l8 i9 n
話吾定我都打錯 + - 符號
" _) l& f6 B3 t( S  p3 G. j係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當4 q0 s& Z# O5 U, P4 s& @
不過,c=101n哥度(解除n係正整數的限制,只是整數)
5 g5 K6 ?9 x8 R. z" M( q" l; A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~)3 F- E4 q% ~( V, s6 X+ F" C
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題6 L8 c" c+ @4 g- M! z% Z
但原先是不知答案,所以唔知有無失根
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( ?% H! t. u2 D& z, P有時見到題目都感到有點不爽
$ K. J& T  ~* q$ F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8 K$ z6 W# Q( L: q- ]
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....
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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:
) e* j& c6 ~$ s3 v9 g" m冇答案ga....
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2條equation solve 唔到3個unknown ga....

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0 H% @- X7 f0 Q) qagree ( {/ n+ y. Q& ^: t$ o

7 Y$ v) t7 t) S* ~' L3 O2 equations 2 unknows7 P# V( s( ~, _8 Y% I8 h

0 t7 n2 b, c6 A+ N4 K9 `) P& @if 3 unknows there should be 3 equations + R' |- u  U& [  I4 \, P
  |! ]! [- k2 t4 A& X4 i
make it simple * V5 l" W. g. k1 d+ N, m6 u

* U( o% }' z% S# c! o( K5 O- k# qsay
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$ @# [0 W' y) Q3 P5 ka + b +c = 3
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4 y3 w# p7 w* X, N7 l' Q) Ja+b = 2) F* q) D& V5 Y# ]$ [8 Q% s
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then c is 1 : v& }8 g1 x& P% ?' B+ _+ Z5 q

6 u; U! i5 G2 `+ Z& i6 ga = 2 - b 0 T; K& f% f8 s4 y
+ S6 w. p1 c1 P. L
so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:5 O4 W8 K* h9 }3 `6 w
冇答案ga....
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; X# d& W3 M5 U0 X) p4 \# Y2條equation solve 唔到3個unknown ga....

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此言差矣~- }" L4 ^4 x9 u' A6 M6 B7 f

4 s4 x' V* |5 `; @4 D7 n2條equation solve 唔到3個unknown ga
: d5 Q$ Q' K' v4 {0 s* W3 b0 h$ {還欠一個條件,就是3條equation都是linear independent(線性無關)的, l  s- p8 Y* J% G3 O- H

3 o5 |! @( z1 i7 p% \簡單點說,多元一次方程就是線性方程的一個例子" A# p- F$ |, O% r$ A3 N( G/ 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7 G8 e: L$ C2 ], K' B# R  B! W; U
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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~)
! Y- F1 Q) R4 e8 A例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解3 P" L( \0 _" B* w" ~! L
有興趣就解解看
+ h2 b7 h2 U4 G+ U, s/ L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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8 I' g! Q, r' F! j2 e" c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:
. @5 v) P" B- t  N: H4 B捉錯處就唔敢當6 d$ R+ g" S- J0 ~! U
不過,c=101n哥度(解...

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9 a  ~4 M1 U0 d+ Z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& X0 P2 b  P7 k9 m
反而適當地調節一下 , 咁會理性好多+ P( K8 t4 [' I  ?* t, a
就好似隻game 由12粒珠 加到13粒珠咁
' j9 i9 O& P) A5 R$ y' [$ X; p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:$ j/ _) n4 T% m' L, Y9 u% @

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p.s. 求''堂''字正寫...

( Y/ S, g9 R5 q$ X已是正寫吧