sakura310

Filename: DSC01158.JPG' m8 d$ Q" s6 ]& }5 L1 j# k  h
Datetime | Downloaded by | Counts& Y+ L+ L6 g7 p8 k) u; e4 y* A
2008-01-18 00:25:24 | 阿感 | 2
% W" d/ q( s& T/ v' \5 S0 T2 ?2008-01-18 00:24:20 | playbr2 | 2( s/ ?/ H5 {) ]( M0 l. s- `
2008-01-18 00:22:02 | 但丁 | 2' Z5 ~- q- j' e- M/ h! R8 q

3 ~3 z/ r3 w1 G/ R$ _5 e& |點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( h5 u  B, y# [( n' z' x) d' q/ W
Filename: DSC01158.JPG) R8 a3 K! H* t9 }' c+ f/ {2 R
Datetime | Downloaded by | Counts
+ ?* {+ _8 D5 o" i2008-01-18 00:25:24 | 阿感 | 25 b. G0 ?+ b3 ~! z+ w# w* A
2008-01-18 00:24:20 | playbr2 | 2/ I, a+ E) ^7 g8 I" l6 o) Q/ N
2008-01-18 00:22:02 | 但丁 | 2+ D( j& t3 R2 y1 e3 r

9 s! f+ k) g  j/ C. s; F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
1 r9 N. h$ `9 R2 r之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:- D5 L5 l/ h2 h0 G" Z3 G
Filename: DSC01158.JPG$ L* w6 E% u+ C: T5 R7 s
Datetime | Downloaded by | Counts
+ V" T/ E. V8 g8 E  Q2008-01-18 00:25:24 | 阿感 | 2$ [: M+ L6 Y6 ]+ M. m# _$ {
2008-01-18 00:24:20 | playbr2 | 2* P$ w# v+ g3 I1 N5 ^/ L3 e
2008-01-18 00:22:02 | 但丁 | 2
% J: m2 o3 e! [7 ^4 G- b2 [* F
4 H: T; j, W& O3 ?) n/ i5 R' j點解大家都down兩次? XD

4 K8 U# O' G1 o. C1 n" v: v1 |: x* y
快d捉我錯處% f# v2 p& x( p' P2 s' l. _& T- T9 h
話吾定我都打錯 + - 符號
$ D1 b1 y+ F2 N0 }( X3 C4 @) E係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
( f! }* z0 ^8 P% t, h不過,c=101n哥度(解除n係正整數的限制,只是整數)
: D# N+ W- N( G3 y& T7 Y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~): v: Z5 ]. \; V
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題' Z( G& Y. G0 K2 a3 D7 z
但原先是不知答案,所以唔知有無失根
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9 q( n+ m% T2 t有時見到題目都感到有點不爽
) M" B( `% h$ C; `5 U+ m, m5 Y" p) u8 Y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% ?9 s) C5 V' j" ?, Y6 o
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:
, c- u+ d0 g5 W+ ]7 V0 P3 c冇答案ga....
1 _* B: E% U! h5 k$ \
5 K7 p8 g; Q* F) F2條equation solve 唔到3個unknown ga....

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7 n2 r, U# k, L  i, Kagree $ ~3 }: [* d+ p1 M0 h
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2 equations 2 unknows6 |9 V* t0 t+ T; C( z2 q8 w* s" Z! _

' w5 `# t2 F) f8 |# w& ^- ~if 3 unknows there should be 3 equations
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7 l4 ^. Q; r( Q: g2 Zmake it simple - g2 f5 X6 U5 I$ B+ n

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: ?* a$ c; N/ i" U& W6 B. T0 E* ja + b +c = 3# e5 n1 t7 |+ d9 Q) M; O

# J- r7 j4 a1 I! u1 e' B  }a+b = 2
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then c is 1 # @  U" U9 X4 ]9 S- E

4 I- s: n6 o  g) \4 E6 pa = 2 - b
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5 r5 N/ v) k9 O3 F+ `, bso 0 = 0 ( Y% _$ o* a1 s8 S

  r( {* u& h) k; f

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:( l7 B) T6 C8 `1 T: W5 Z5 U7 L7 ?6 z6 P
冇答案ga..... r, i' r. o/ y! o
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2條equation solve 唔到3個unknown ga....

3 ]$ G9 M& c0 O/ y; _+ I$ ~" E5 \
. S  Z& e$ s4 ~7 q1 b
此言差矣~
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% w/ L5 b8 _1 D2條equation solve 唔到3個unknown ga
9 N5 y( w3 N0 o$ r4 k4 \: \: J3 f還欠一個條件,就是3條equation都是linear independent(線性無關)的
2 C) X) Q, y9 ]' I9 u" I0 n8 b" ^% R2 ^. C6 I+ F
簡單點說,多元一次方程就是線性方程的一個例子' {( Z; L. W& [4 P8 K
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~)
. s3 q( v( T3 k& H$ z, r例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 R9 W( `; q5 ?2 l  ]- V有興趣就解解看/ i; Z& n% H6 s+ _" k3 U* B8 h( \
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:, d5 H/ W- K1 s1 G
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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:( P! W3 V: x, E, K8 g  Y# P
捉錯處就唔敢當2 _6 N* K3 J6 E  m0 W0 O  V
不過,c=101n哥度(解...

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0 ~9 e- V: q, X, Z3 V1 W  |1 n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
/ q  J& j, Y0 C) |+ `+ f: H反而適當地調節一下 , 咁會理性好多! P# v7 d; ]' U% X( h3 w) I
就好似隻game 由12粒珠 加到13粒珠咁
9 F, z( {! @) f$ C3 N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 14:57:8 d: ~8 d5 Q# ]. v
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p.s. 求''堂''字正寫...

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已是正寫吧