sakura310

Filename: DSC01158.JPG5 Q# v. U5 e) V; o' \
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2008-01-18 00:25:24 | 阿感 | 2
6 g$ d# Y2 L' }4 h2008-01-18 00:24:20 | playbr2 | 25 q* g" V. H0 k, F; G
2008-01-18 00:22:02 | 但丁 | 25 _% b& ~8 n' \
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:& P8 d4 q9 ]; k  ~( \; C' P
Filename: DSC01158.JPG
' L! x1 k6 D) m" G8 O% r1 ZDatetime | Downloaded by | Counts
4 ^4 g& H( \  z" Q) q$ X2008-01-18 00:25:24 | 阿感 | 2
* i; }. E  _( J4 t2008-01-18 00:24:20 | playbr2 | 2  S9 o- S* t5 j+ B2 J
2008-01-18 00:22:02 | 但丁 | 2, O) B6 M# {( o! ]. A8 W

7 `  w, d! k: _點解大家都down兩次? XD

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( K. f. s( ]; h我第一次開睇左2秒就close 左
" R2 P; j( L& z  r9 C# U之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:8 V. I+ I1 b/ M& R" n
Filename: DSC01158.JPG4 [0 S' |" {3 [1 z- D7 U# v& v# |
Datetime | Downloaded by | Counts
8 ~) w' F) w  g  l+ W( [2008-01-18 00:25:24 | 阿感 | 21 z  O& ^* I& N, j9 E/ a% Q) L
2008-01-18 00:24:20 | playbr2 | 2
9 f: U- M4 l! H6 i" j2008-01-18 00:22:02 | 但丁 | 2$ V. G8 F) a+ S. s& ^
2 W3 E, F  J5 H0 s
點解大家都down兩次? XD

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! ^3 F7 ^( Q4 g  U0 a, z/ q快d捉我錯處+ Z4 r. @, `0 Y! l
話吾定我都打錯 + - 符號
0 M$ {, y, ~" ~& U( j! Z係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
; p# O3 p# W. h  x/ v不過,c=101n哥度(解除n係正整數的限制,只是整數)
$ T' H: Q1 k# f5 i6 x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~)6 q3 D' O! K% ?' n7 ], G* q- D
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
7 z) Y8 x' f& ~" Q9 g6 W; v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! w8 v4 W0 \1 A
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( x: A  D2 d/ H( r: a: z
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....7 N1 L# u% t, [8 n/ Q  r4 b

$ Q8 v- @. S( [0 s" P. J6 v  v2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
$ g7 z3 V  P: w" [! V9 Z冇答案ga....& u* s! _9 j2 d3 Q, V
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2條equation solve 唔到3個unknown ga....

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agree + I- z/ t% \$ L6 S

3 A) ^2 T. U! w2 equations 2 unknows
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if 3 unknows there should be 3 equations + _2 |/ ^, u8 y
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make it simple % x$ ?& l. L) H/ D) j
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say - v) a- ?- y8 G0 g, B( j4 r
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a + b +c = 38 ^0 U. L  y( d& b8 M0 m7 `0 x

' r# D2 J" _8 e5 La+b = 2
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8 {$ a% T* e; n/ I8 cthen c is 1 2 `: ?) d# w4 Q5 A2 q
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a = 2 - b 2 A3 O: B. C' c4 T
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so 0 = 0 1 f0 j7 Z  N" I" O
5 V6 w! c+ B- Y' i

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
! }/ B; u2 [1 ~2 u" a7 F( I冇答案ga....
) k/ [3 s1 l1 L
  e/ C9 Z: _1 X2 U2 i% \- w2條equation solve 唔到3個unknown ga....

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' }0 O( q9 g6 W$ o( T此言差矣~
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2條equation solve 唔到3個unknown ga
3 y: c# u" V. y( H+ w' }還欠一個條件,就是3條equation都是linear independent(線性無關)的; H3 F- v( s: b' a

, _; f' W7 v. V# t& ^3 d& |簡單點說,多元一次方程就是線性方程的一個例子0 G3 E2 h* P1 b( 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5 f4 p8 k' Q* y9 [! o  [

& B) \( J/ I6 w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~)
9 d" K8 i0 d  z例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解2 C' }! p+ u; j& b" I
有興趣就解解看
$ C0 G8 A: U1 c! E3 k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:3 ?) q  w. [+ f) z, m6 w
捉錯處就唔敢當
3 \( ^4 P8 W  X- h. y% {' r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6 i% f: ]/ M1 F) m) e! \  e1 s4 Z0 S
反而適當地調節一下 , 咁會理性好多
/ P# j7 F# J% U8 z就好似隻game 由12粒珠 加到13粒珠咁3 @; e( T" N1 f0 f5 `2 P% Q* V5 C
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:
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. A2 u6 T6 j5 h8 O4 qp.s. 求''堂''字正寫...

/ [5 ?7 H" ~6 m3 d% b  {0 z已是正寫吧