sakura310

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. ]2 v+ j5 k0 \' B7 B& |! D2008-01-18 00:25:24 | 阿感 | 2
6 h  u  ^+ ]/ m+ t9 v2008-01-18 00:24:20 | playbr2 | 2
# J  g/ F% x4 Q1 r' ^2008-01-18 00:22:02 | 但丁 | 2% b* ?7 l$ t0 V& d% Z1 H

+ U( e) @; y5 r3 e, K# Y點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:+ g' R( |. h9 D
Filename: DSC01158.JPG
. Y4 b' i6 n5 @7 x$ ]6 r$ ?: YDatetime | Downloaded by | Counts9 N4 x  W" Y6 Q8 q9 E3 v
2008-01-18 00:25:24 | 阿感 | 2( d0 u4 ?0 E( P$ @
2008-01-18 00:24:20 | playbr2 | 20 d6 \- H: ~2 e5 C
2008-01-18 00:22:02 | 但丁 | 2
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4 X' m% @6 \, _* P2 {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  g3 q9 z% e; z6 G$ F9 ]
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( Z$ S" j4 k2 G% E! ]  y' o/ O, ]
Filename: DSC01158.JPG+ `1 L/ B# W9 Y" N2 G
Datetime | Downloaded by | Counts6 S: y$ A4 d; W6 S
2008-01-18 00:25:24 | 阿感 | 2
9 A3 U) c7 v5 r8 V. M8 z! i2008-01-18 00:24:20 | playbr2 | 2) b, C8 D( N$ g- f# u% m
2008-01-18 00:22:02 | 但丁 | 2% t, i4 z' K- s4 K  R; I

$ X% t4 j. u+ j6 R9 w點解大家都down兩次? XD

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( S' z1 r0 {8 N9 _5 L5 m快d捉我錯處  F" w( W, y  D' k' W) Q# J3 t
話吾定我都打錯 + - 符號0 \# k: Z) K/ H2 j
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當9 c$ {1 B1 Y. j6 q
不過,c=101n哥度(解除n係正整數的限制,只是整數)
' J4 p3 D& q+ w5 T) 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~)# v9 Q! h' ], C  X
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
& V3 L  M" ^0 `+ T% l但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
9 {, [, A. \/ 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
" o5 c5 V$ N- @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:, q3 F1 i3 a# o: ?* Q
冇答案ga....
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( ~4 e" u2 i4 z/ s7 p2條equation solve 唔到3個unknown ga....

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agree
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9 P+ \+ w5 _3 M% C2 equations 2 unknows
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if 3 unknows there should be 3 equations ( |9 R6 {# M- i

7 l& P4 f* K2 l" N; I7 E5 Lmake it simple 5 W1 x8 H" z7 t2 L3 }8 C

( h% q5 }) k8 ~- lsay
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: I; v' i8 g1 p$ ?+ O/ M: [a + b +c = 3
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a+b = 29 Q, `. J9 S1 {" N! {
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then c is 1
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* R4 F$ y+ @8 q7 r3 ua = 2 - b
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: Z0 y4 K9 m- _/ ?so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
7 l- Y: X9 \( |/ {0 I1 `( U冇答案ga....2 P6 G" m4 I" f3 K  |7 x

4 m+ @5 G$ U5 p2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga9 s9 b) t" u' O% X( R5 z
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, i# A" y4 ~& y# i9 M  {" r
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" x4 j4 B* s4 q  ^% c" M4 w
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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~)
5 _' r2 V* ^! U1 a  }例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解' p; b. v& l) B- [
有興趣就解解看
, J# w1 e# ]3 t+ p) ^0 }; o3 [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:* s' J: Z1 {5 _0 A, \$ X
捉錯處就唔敢當4 P) t1 L9 Q8 R( [& K- U' q
不過,c=101n哥度(解...

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( `- r% y* E% J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
; N! @& \; j# I7 i4 ^( X  E反而適當地調節一下 , 咁會理性好多7 p( a$ ~( h" r% c
就好似隻game 由12粒珠 加到13粒珠咁
: V  `0 W4 F5 ]0 q" m9 ^/ @當''堂''好玩哂
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/ Z- @+ M3 P2 `9 b- b6 gp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:: [- g( i1 t1 F0 ?: n* V' P, G
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p.s. 求''堂''字正寫...

6 j" q1 `$ k# \0 S0 w" _; [已是正寫吧