sakura310

Filename: DSC01158.JPG* C0 U& M$ T/ b: U" a5 D) ~5 U
Datetime | Downloaded by | Counts% t! P) D, s3 V6 j$ F8 v
2008-01-18 00:25:24 | 阿感 | 2
" A; M: J: M- I$ S9 q4 V2008-01-18 00:24:20 | playbr2 | 2
: I* D- ~: I7 E8 m' a7 f2008-01-18 00:22:02 | 但丁 | 2
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; h. _1 K: c8 _8 n, h點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
, u8 [$ X3 C, c. k2 ~Filename: DSC01158.JPG% Y+ E  k8 W' r0 ^% o3 G$ `( |) o
Datetime | Downloaded by | Counts- l' Y. I! w1 `, w7 X
2008-01-18 00:25:24 | 阿感 | 2
# Q3 H, o/ R3 H1 a2008-01-18 00:24:20 | playbr2 | 2" x% _8 b7 `6 B% v) |% z
2008-01-18 00:22:02 | 但丁 | 2% t0 J. W  E0 @- N9 G

( S& ~/ I0 i4 D, k5 l) _點解大家都down兩次? XD

, i* b2 ], O! I; J; u& r

) M: ]. c$ N( Z. }4 r5 x( v我第一次開睇左2秒就close 左
- b9 F* z& E- L$ h' J% I之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:. j# P& r6 p1 A* q8 K3 T
Filename: DSC01158.JPG
  v! P' w; @/ c) w7 j; LDatetime | Downloaded by | Counts
$ s5 g% s$ }$ m4 S; G+ B! j, ]2008-01-18 00:25:24 | 阿感 | 2$ {. D( d+ v. ?( e
2008-01-18 00:24:20 | playbr2 | 2
& g! l: H, q& C# g  B2008-01-18 00:22:02 | 但丁 | 2, A4 h2 a' G) j7 p

/ D8 C  w) [, ?& J4 y: P點解大家都down兩次? XD

3 n& h, t4 p. {) a: r( U

3 h" `( S2 A6 `# z) d快d捉我錯處
3 E" ~1 h% b2 q& `話吾定我都打錯 + - 符號
/ A$ e( U- u& Y! ?& r4 k" I/ V係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
' M" U# I6 w5 P& H不過,c=101n哥度(解除n係正整數的限制,只是整數)
! Q  N8 D8 g2 X5 H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~)9 `; M) @. L# t2 m- u
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題: s8 t- P+ ]+ I. f
但原先是不知答案,所以唔知有無失根
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% Z6 a  {: Z- ^+ |! s( ~有時見到題目都感到有點不爽  q8 Y9 t3 x. x
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% F2 s* j) A- P: F, 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....# g8 |+ ^* c1 F2 e/ e3 x6 O
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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:8 l1 q, s/ W! s5 i$ E
冇答案ga..../ g/ ^+ ~' x- [1 r

. Y. _  S& e5 e0 R4 s0 T2條equation solve 唔到3個unknown ga....

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% E  G3 I3 I% p2 L; y" m% cagree
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2 equations 2 unknows
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2 M- W/ `! Y6 w# iif 3 unknows there should be 3 equations 5 f& g; ^+ S5 [/ l6 R
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make it simple
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4 C/ O, j( e5 w1 t! v; zsay
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a + b +c = 3
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. d3 H5 ^* |' ~; K3 A2 ~0 [+ ~a+b = 2
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) I$ y$ _9 I) h& Kthen c is 1
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( q! p# w# T! z, W. D) fa = 2 - b 5 p6 U) T1 O' Z9 a+ L
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so 0 = 0 + D7 X: G+ y3 w
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:! [5 ~0 j. X  N1 f% ]0 |. y5 L
冇答案ga....' c" l1 Q& |2 ^1 I: z

  U! e$ m- k$ a, H2條equation solve 唔到3個unknown ga....

5 f6 K$ i, J. O: a( q& ]- Q2 w

5 ~- J! {% a8 t. s. N8 Q3 a此言差矣~( H( {; O7 A/ K
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2條equation solve 唔到3個unknown ga5 Z$ q: ~$ C4 q& Q. u
還欠一個條件,就是3條equation都是linear independent(線性無關)的5 |  Q1 I% L- L8 y

+ ?; p, T6 C$ h2 s簡單點說,多元一次方程就是線性方程的一個例子4 v1 u) ?: a7 G, Z
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9 s1 h% P: B4 F8 L/ k

& `8 u- a7 Q7 W7 t2 E2 k/ u: @* ]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~)
* N2 O! d0 R9 O' A例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
: Z7 E7 ^" y! d) W- M  X; \有興趣就解解看
6 Q2 x0 C8 R" C* k3 }9 U不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:" \. n5 q# w5 D

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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:
5 {- I4 N" @' ~4 b* S/ P. d7 B捉錯處就唔敢當
* A3 S* g7 [$ W% ?& G不過,c=101n哥度(解...

6 `( M3 D) ?  o
$ b, W# t5 _" B9 }) ]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+ O% A& ^2 y2 Z- S- ?$ l$ k
反而適當地調節一下 , 咁會理性好多
( s5 ^' w0 v8 P+ q就好似隻game 由12粒珠 加到13粒珠咁* o+ K4 r! E  N1 y) l3 p! d5 p9 K
當''堂''好玩哂/ o4 I2 T8 K+ X, S
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:, k0 |- S2 V+ z) u: f! T4 R5 t/ s
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8 H4 Y/ n7 s5 s  Fp.s. 求''堂''字正寫...

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已是正寫吧