sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
7 u4 M* f- w9 D2008-01-18 00:24:20 | playbr2 | 2+ P, i# O3 z1 e0 \9 y6 X5 Y
2008-01-18 00:22:02 | 但丁 | 29 O' t0 b! [* S0 `

: H9 s& r1 l( @% R6 J% q點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:' m; ^& I7 i" w& T% b) F6 ?
Filename: DSC01158.JPG
* M  Y, a* r( C" `: M  IDatetime | Downloaded by | Counts+ I5 f4 {0 {( b/ ~
2008-01-18 00:25:24 | 阿感 | 2
, b1 V' D/ B1 d( O* k, Z* a2008-01-18 00:24:20 | playbr2 | 2: u2 }& P3 N) c3 M: B( t
2008-01-18 00:22:02 | 但丁 | 2" [6 r% x6 }! ~( E. g$ I9 l
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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% c! P1 ?! E; S) ]$ Z" j$ [
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
3 c6 R9 r/ P$ w0 ~* ?Filename: DSC01158.JPG. V5 C4 w2 z2 j1 f: Z# n
Datetime | Downloaded by | Counts
8 G1 c7 [- ^7 i- H/ I4 O4 X2008-01-18 00:25:24 | 阿感 | 24 R, _! M  O; A" z, i# D5 P
2008-01-18 00:24:20 | playbr2 | 2' u& Y  C0 L+ M4 h7 g% p! z; F
2008-01-18 00:22:02 | 但丁 | 2$ t1 C$ j, b! \# r% v& T$ h" }' N
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點解大家都down兩次? XD

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. e* L' Z9 x2 r, r快d捉我錯處
  ?3 E! L! A7 e/ x7 R8 v. `話吾定我都打錯 + - 符號
0 g2 x/ @2 |6 J# D0 {# W+ o係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當2 h& _$ b% _; V
不過,c=101n哥度(解除n係正整數的限制,只是整數)! l: r6 J* A9 Q" |8 L
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~). R1 g* @0 f. Z5 @
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題4 N; |6 n: L* B+ b
但原先是不知答案,所以唔知有無失根( o" d1 Z6 O7 K$ [( `

7 K( L5 @4 G$ E0 [有時見到題目都感到有點不爽& `# f3 s+ G( C; _4 V1 K
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+ z  V+ O- ~) `! M$ T4 c& a
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....0 c3 r1 t+ M; M0 L! w9 G( Y$ C( `

6 M" E/ ~4 f) B, ~' d3 A2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:# h4 D# t3 g0 m- i
冇答案ga....
" ?  [2 Y: m2 h  e2 n) X' b
" u0 Y1 H$ J% y" d/ u2條equation solve 唔到3個unknown ga....

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0 T' W8 h4 P2 K: w5 A% nagree - _; c1 `8 q, }* K& v
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2 equations 2 unknows
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if 3 unknows there should be 3 equations : a2 Z0 t+ p  @: X$ }* p7 l* R4 O( M

# C, `, u2 F7 b1 B, v9 ^make it simple
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# f/ t( M- c5 {! F$ w( xsay
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a + b +c = 3/ a8 L2 y0 g; v+ k% u7 g& J

6 x" _( r$ q/ X+ Y2 m& w# r3 M" ya+b = 2% e. `( S# q/ V/ u4 }8 m' p
1 k9 L* L# m3 j4 V+ a; N
then c is 1
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/ Y7 s7 G. u, j: i$ U- Ha = 2 - b ! O2 a# ?# d$ `6 K. h0 a
0 b# f  K' D( B' X% D/ t3 t
so 0 = 0 4 r1 N) }5 \6 t; a+ Q) F6 P

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
8 I4 J" E. l: `! k8 T' K9 L/ Q冇答案ga....
7 ?4 U, r  k! e7 ~1 |0 W& \; a" ]
% C. m! T6 d+ M% Y) m( o2 D2條equation solve 唔到3個unknown ga....

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6 `6 ^  C7 j- r2 f8 O0 O此言差矣~
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2條equation solve 唔到3個unknown ga
9 v6 v8 n" Y; U& u+ D- \) G還欠一個條件,就是3條equation都是linear independent(線性無關)的
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8 @9 ~6 n7 a  l/ P7 ^簡單點說,多元一次方程就是線性方程的一個例子
( A: d* ~4 g: D' g! b4 i8 e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; F. c: Q& |/ S5 k- }; z+ H8 |

, ^- l( V; H$ ?* `2 j( l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 G& G4 A  R1 t" Q; W: H% B例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 d/ k* ?9 C; G+ g( j& ^" O有興趣就解解看( P$ g& k3 i5 N3 G- Z5 o# f6 N' G: X
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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3 G0 u) I# ~. |* Y# g" F% u8 ?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:
& P  D5 R# h7 j5 T; G8 @0 j6 g2 r捉錯處就唔敢當
) e; a! |; I$ ]' ^! `$ V) ]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
& d& q! |4 q! }9 T反而適當地調節一下 , 咁會理性好多5 d2 ~2 C8 M; G1 y) ?! @
就好似隻game 由12粒珠 加到13粒珠咁0 W' I! q/ b+ x- J" i/ V
當''堂''好玩哂5 a7 Y6 {$ Q8 {5 W* R

* x& l( a6 ~+ g9 U) r6 @p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:6 f% ^' V5 i; Q# E, k0 e: v

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p.s. 求''堂''字正寫...

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已是正寫吧