sakura310

Filename: DSC01158.JPG# b( z2 V- m$ C5 h" s6 I  U; ?1 g
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2008-01-18 00:25:24 | 阿感 | 2# d" H# G% |  U  o
2008-01-18 00:24:20 | playbr2 | 2
* M+ M; e2 k3 y* \, \2008-01-18 00:22:02 | 但丁 | 2/ N2 x  U* }! ^; d, j5 n% u

3 E* J. R& V' ?5 `- |點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
; m: l( p+ c; k2 U0 \Filename: DSC01158.JPG
6 I7 _. P5 V  c# [9 jDatetime | Downloaded by | Counts
: w/ x" i9 D) L* j# B6 C2008-01-18 00:25:24 | 阿感 | 20 s, E8 `0 l& P/ A
2008-01-18 00:24:20 | playbr2 | 28 N6 _4 v9 X, [( v
2008-01-18 00:22:02 | 但丁 | 2$ F* L) l7 z9 @/ r3 U
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點解大家都down兩次? XD

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' |, E8 b0 N9 k. ?% Q我第一次開睇左2秒就close 左
: J- V8 O9 Y. j$ q' _$ }之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
7 u  \. L  {1 }5 w+ @% ?4 `Filename: DSC01158.JPG) [) r6 @8 l6 y9 D( |& s. y$ _0 K
Datetime | Downloaded by | Counts
; k. T6 t. [' v* }' D. s  w7 X2008-01-18 00:25:24 | 阿感 | 29 T  }* f+ ~0 r$ _2 _
2008-01-18 00:24:20 | playbr2 | 2" k! T- a% ]: G1 e- a
2008-01-18 00:22:02 | 但丁 | 2
* c  h( a0 p" H( m3 W9 Q1 z9 g+ C& C3 ?3 S" W& `6 J0 e/ u
點解大家都down兩次? XD

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8 r9 Q9 W" L  J) D1 i9 [# }' j+ \1 J快d捉我錯處
$ T2 T: a$ ?  N8 x話吾定我都打錯 + - 符號2 H8 T- M# Y9 H
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
: A9 [! [8 _- @# J; J不過,c=101n哥度(解除n係正整數的限制,只是整數)" ^) X1 m: w0 K$ I7 V' z
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~); _- g$ [+ ]5 _) Y
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題# T4 ?7 ]. H. R$ l; v
但原先是不知答案,所以唔知有無失根
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7 F: X3 c( c8 a. k3 i( `有時見到題目都感到有點不爽
! Q% ~4 T8 K6 m& e% m6 ?9 N/ l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
1 x5 N" W. b+ F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:
2 X' P& q7 b6 }0 }& G冇答案ga....
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1 T% O4 H: k: W' @. p2條equation solve 唔到3個unknown ga....

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agree 8 K1 Y: ^+ c' _
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2 equations 2 unknows
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+ l2 O1 X8 @- O/ ]- J8 ~( kif 3 unknows there should be 3 equations , u  j- W5 `5 y

" ?- V" Q: e2 i' Amake it simple % ~& s/ j+ T: f$ F# Y0 u% e: j
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say
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a + b +c = 3
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a+b = 2' t  Z% G- V; P/ @: c4 U# @

+ ~' A% Z7 U* n6 e. J* S9 ~. mthen c is 1
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: n# ]: I# b; f" j. @6 ?( Ta = 2 - b , C' n7 f" W. b4 K& I/ R1 F
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so 0 = 0 $ X" t& o+ l9 G) ]- v/ v

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
. C; Z! n; Q' p; z9 `7 Z: @冇答案ga....4 u/ _. Z+ N' y' D9 [

2 x- |+ l, N# n+ A, K2條equation solve 唔到3個unknown ga....

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此言差矣~& V' s( h7 z* ]6 |) |; e
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2條equation solve 唔到3個unknown ga
3 |( O5 t6 P: q; K& o  c還欠一個條件,就是3條equation都是linear independent(線性無關)的% o7 B5 S  F6 g* ]

! a0 j6 I3 F9 m- {簡單點說,多元一次方程就是線性方程的一個例子
/ @8 B* m, ]$ o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. M, [, L+ w/ P5 Y! V# g, W
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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~); u( n$ x# ^" q0 H7 ]
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解8 [2 M9 i, {( W7 G& t
有興趣就解解看
6 r4 K! t: u) }8 E. ~不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:2 n5 j/ t) _' P0 S2 r
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3 U4 C! ~# d9 S* r9 {/ c6 h5 t( a, g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:
0 `' _3 p) I- [( J8 z3 L捉錯處就唔敢當% X% ]( s6 ^& \& l5 d9 H0 X7 _# @0 e
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3 R! Q8 g0 Y. `8 j) E* h: H
反而適當地調節一下 , 咁會理性好多" X" |+ c% s) O, r6 A
就好似隻game 由12粒珠 加到13粒珠咁
& [; ?8 u+ j. s' K! k" \( j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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" G8 B5 s0 L2 g0 @2 _! Bp.s. 求''堂''字正寫...

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已是正寫吧