sakura310

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2008-01-18 00:25:24 | 阿感 | 27 m. G0 ?  f+ S' K
2008-01-18 00:24:20 | playbr2 | 2
" X8 f7 w+ p* E: b" j1 x+ ^, ?2008-01-18 00:22:02 | 但丁 | 20 Z( F! ]3 k- S, T- `! k

7 {: H: a( t9 T: D1 m, ]點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:- S, b5 q0 F  `# i  m1 M
Filename: DSC01158.JPG; g% o, t" l* f% t( j
Datetime | Downloaded by | Counts3 a& x& T5 Z3 w  K
2008-01-18 00:25:24 | 阿感 | 2$ @" r+ ^- x% ]% U8 H/ k. q. |
2008-01-18 00:24:20 | playbr2 | 2
9 J  X" f! t2 S$ Y- A2 X. S' n0 O2008-01-18 00:22:02 | 但丁 | 2
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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! R* F& R; V/ y
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:$ w3 D+ M6 ~3 L' u: y; d  E/ [% y" q  O
Filename: DSC01158.JPG+ v2 ~& k9 k( U) F2 r+ Z% Q+ W
Datetime | Downloaded by | Counts
/ S4 w: P3 r  L; N8 S/ L* o2008-01-18 00:25:24 | 阿感 | 20 G9 P, _8 o' H& l. Z0 `" c: @
2008-01-18 00:24:20 | playbr2 | 2
. Z# p+ C+ A  Z8 f6 a4 h2008-01-18 00:22:02 | 但丁 | 2
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- ^, n0 _" }' d) u8 W  o點解大家都down兩次? XD

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快d捉我錯處
1 r0 ]* k+ f- E: N1 V1 b( B* T話吾定我都打錯 + - 符號% e6 ?6 z* C/ u# B1 m
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當! i0 g: x- m+ Z' j
不過,c=101n哥度(解除n係正整數的限制,只是整數)- M+ f5 n8 U7 R4 ?) i& w
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 U7 e4 B7 N1 V" _- Y( c
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題8 q# N) q9 X1 K0 e, c1 g7 h
但原先是不知答案,所以唔知有無失根7 E; h- q! L3 s) G) E

: K4 J+ {  h2 j# \" |& v有時見到題目都感到有點不爽
2 w$ E2 f" J5 R7 u* P- y% x# ]! u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
' f. e' t- {1 s6 Q: E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....% i7 z2 q9 X8 g) U+ M6 A0 n
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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:
! c' n# p# z1 B冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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2 ~& ?0 v8 T, Oif 3 unknows there should be 3 equations / d7 E0 u& E' Y% R. J

  }+ m5 o+ V) ~6 p+ D7 ]+ |make it simple * ?. w! ~0 j) _
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say
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  t$ Y0 V& \( u/ oa + b +c = 3
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# t$ V1 b3 K. s( {( [- Ta+b = 2
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8 }8 ]" X! I9 [2 x" S! Hthen c is 1 9 o0 O1 _  j/ Z+ E5 p5 u
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a = 2 - b
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so 0 = 0   b1 Q& H  m9 T
+ [4 y0 o: E, m' l/ K+ s

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
! L; r" W* U  a8 T7 }4 B冇答案ga..../ M4 C: _* ]" p$ i% o5 {  `. Z

, f' {6 p4 [2 s/ Q. g1 _  s2條equation solve 唔到3個unknown ga....

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此言差矣~2 e  c  M0 S9 n& z3 b
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2條equation solve 唔到3個unknown ga
% Q( S" f9 K& I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
  U( Z  z5 E+ I/ O5 W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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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~)3 g- H# M" r4 y- b4 T" ]. z8 o
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解  n2 ^8 k1 `) G# p1 N
有興趣就解解看6 I$ `& `6 @1 v8 s8 F/ @+ _, t& ^
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:
* b* \1 n, W7 L& w$ @( M捉錯處就唔敢當: C3 A8 w) R2 Y' ~2 k( h  s2 a
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5 Q( s; T6 X5 n! U9 D0 k$ ]
反而適當地調節一下 , 咁會理性好多2 b4 {$ g: @) V+ s7 C
就好似隻game 由12粒珠 加到13粒珠咁' \1 V% U' @) d- l5 E$ u- j: e
當''堂''好玩哂6 g% D" W1 n2 O  P6 \9 ?
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:/ l; f+ V. p& e5 K- c

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p.s. 求''堂''字正寫...

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已是正寫吧