sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 21 [2 X/ F' X9 z
2008-01-18 00:24:20 | playbr2 | 2" t. U. t$ ]* A4 X6 _
2008-01-18 00:22:02 | 但丁 | 2
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0 N9 W* }/ _0 B/ F點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
* [$ t8 s4 D7 x, v9 b- U& @Filename: DSC01158.JPG
: [  I1 P7 c( s# C* S, _Datetime | Downloaded by | Counts
/ r5 |9 x% H6 X6 M, K2008-01-18 00:25:24 | 阿感 | 2
9 n) {2 q4 N1 i7 w2008-01-18 00:24:20 | playbr2 | 2- e9 E$ _& U% y- T. f: G+ X
2008-01-18 00:22:02 | 但丁 | 26 Y1 T5 Z$ Q4 G- z: s7 B4 a" [

: X$ \  I2 F! p) p+ ?- l  G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* d( t1 C8 N& _1 D4 p7 h# v+ C
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
4 S' `0 v7 B- C" I+ p  I: z; A, eFilename: DSC01158.JPG
2 w, M0 X' x$ }7 ADatetime | Downloaded by | Counts) ^- D4 @. {# i' ~9 k
2008-01-18 00:25:24 | 阿感 | 2/ y) i" ~3 ~4 S3 n5 l2 s  K
2008-01-18 00:24:20 | playbr2 | 2' R8 K' R% v  w
2008-01-18 00:22:02 | 但丁 | 27 J6 L' ?. g6 \8 n

  F( g1 w" s( B" f( C點解大家都down兩次? XD

4 ]( @4 G1 g1 K/ G: j" c* i. U2 A! s$ t2 Z  q2 C0 D1 |: p
快d捉我錯處
0 N0 }& U0 q+ m! @: D2 u話吾定我都打錯 + - 符號! ?. O0 `0 b) ?, v6 j
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當0 L# q: W3 b; L1 W. u
不過,c=101n哥度(解除n係正整數的限制,只是整數)/ w( P* A7 V; H  N7 b9 a
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~)# C: {3 V/ }7 n: W3 i. x) r: o
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
( m1 ^  I: i, K8 C7 a* J但原先是不知答案,所以唔知有無失根) F" K+ g( y6 k

* m  S* G# d" x/ R9 a) f: |有時見到題目都感到有點不爽+ A) O' \/ Y" 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! I; U5 d! V& d5 u% G
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....
: `1 {9 ^8 f3 M( c! }, B0 m" W% q! b$ O5 S
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
1 Z9 _: \6 g- F5 O, D$ L冇答案ga....; }$ m1 ~" S" w& H) \9 P: r

! ]  Z0 J$ t% J( i0 e2條equation solve 唔到3個unknown ga....

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agree / f( Z+ k* |& v6 u0 w4 i: u3 w& V, C

. t" Y  `7 I8 Q, k7 E2 equations 2 unknows
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if 3 unknows there should be 3 equations / n0 |! b/ q$ r9 O- T$ ?; q$ P

7 X! y# H8 V' qmake it simple 8 N! l! v3 m" k) n

, x$ u6 Q* R) _say 0 q: C3 Z* Q) `
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a + b +c = 3: j& l7 i# m9 W0 I. X

. c9 Q* L: F# i$ t! ga+b = 2
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then c is 1 - b% B5 j/ s  ]2 F
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
* v% v' \7 f) M* t$ D冇答案ga....0 w, o' j( ]$ L
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2條equation solve 唔到3個unknown ga....

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4 l9 S& i/ u+ P3 ?* g5 j此言差矣~
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2條equation solve 唔到3個unknown ga5 P. c. `4 p4 T% T7 ~, k. V
還欠一個條件,就是3條equation都是linear independent(線性無關)的8 e" k/ ^1 e! u( R: c

! k  c8 \1 x& Z: W" q4 m- e7 x簡單點說,多元一次方程就是線性方程的一個例子
& P& }- G4 J! \* v* Q) ^. i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- @( y/ X' s  c* _3 L4 }4 a2 l# N' T
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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~)
* H% U. j' J( @9 Q" O0 |9 \* b例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解  G1 U* @- A  @5 k8 a, ?
有興趣就解解看
+ A- k+ ]6 G9 P0 i$ y0 s( u' g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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+ y; B. ?. N) G: b' s' u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:
1 [9 v/ s# @2 u% Q捉錯處就唔敢當7 a  Q4 c7 L* C' X3 N
不過,c=101n哥度(解...

( _; A# \0 f' _* t/ A/ D+ [* ]  H" p! z, Q. @. I* i
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
/ a! g; v) S- Z  P; a反而適當地調節一下 , 咁會理性好多
$ V6 D3 p. e0 C2 U3 _! E! V6 u4 y; Y就好似隻game 由12粒珠 加到13粒珠咁" I* G" F6 B6 ^! l6 \4 ?# X; q4 u, h
當''堂''好玩哂
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. E) M+ I; R) w7 Q; Dp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:) _/ h' L$ s# I7 G4 w3 I
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5 f5 P& @8 f! }p.s. 求''堂''字正寫...

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已是正寫吧