sakura310

Filename: DSC01158.JPG
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0 Y3 s- u. B6 H" V; T2008-01-18 00:25:24 | 阿感 | 29 ~" E% F& k& ^
2008-01-18 00:24:20 | playbr2 | 2# J: {0 A, }1 v6 w" r
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:1 J$ R8 a9 U- d6 w
Filename: DSC01158.JPG
9 d# d8 V$ E1 |# N9 ?Datetime | Downloaded by | Counts' `# X; j; ]2 @0 j9 H2 A) r
2008-01-18 00:25:24 | 阿感 | 2
3 p  ^- f; b3 |0 m1 g$ r2008-01-18 00:24:20 | playbr2 | 23 {* h3 H8 Q" K/ K
2008-01-18 00:22:02 | 但丁 | 2* `6 j+ k- w8 J; I( \
% ]- |( q$ Y7 s6 h+ h) g3 ]
點解大家都down兩次? XD

  K" d+ {. t! v% q5 S
. U0 F7 z8 `6 \6 Z! o0 S我第一次開睇左2秒就close 左0 W; y3 [) I7 x( r: V: `# c, {; D
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
. x; w% a2 O* Z7 B7 I& F. X9 I1 l& ?Filename: DSC01158.JPG
) T4 H! Y: ^- JDatetime | Downloaded by | Counts
; c0 @; n" @% \$ z2008-01-18 00:25:24 | 阿感 | 2
8 b( f* a9 n& `* p. j2008-01-18 00:24:20 | playbr2 | 2
' Z4 E# A; d0 _+ f8 e0 E7 y2008-01-18 00:22:02 | 但丁 | 2
& {6 W# z; @9 i6 F2 |! Y
5 _- U; [9 z# V3 ~; m; v( w) k點解大家都down兩次? XD

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5 v. K/ d8 I- q; S2 s9 {% a  |! N- l快d捉我錯處
1 U. |+ s9 H1 a8 e話吾定我都打錯 + - 符號
. \2 y, s* J( i! r9 T& O係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
5 T' ?7 M8 _) `# ?$ G不過,c=101n哥度(解除n係正整數的限制,只是整數)+ i- J6 s; L& ]+ d6 x/ g* p2 W
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~)
- y3 D- _7 M" V) R: H知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題1 u( j, n$ ^8 H/ N( ?
但原先是不知答案,所以唔知有無失根2 a2 i6 m' D: i( T

* G. U1 O% W! e7 D! [2 L+ k有時見到題目都感到有點不爽
% e9 h, Z- I. B$ |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+ b( W8 L& C7 s- P/ h! l% g% q8 ~
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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9 P  l  E( N/ {2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
6 d" N5 D) n  }% H' e冇答案ga....8 T" S9 I/ J+ g$ ?# L4 p; L4 h1 t
1 ]; p+ y# l+ E5 P; g& h
2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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. g6 P2 J, ?  s+ ^: G' \, U8 C( Eif 3 unknows there should be 3 equations
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make it simple 7 Y3 f& P) ?% f, S. h
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say
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' L0 V6 q: b& w* Ia + b +c = 3
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% o2 [+ S" K! ]5 K6 [a+b = 2, ~4 S4 K8 t' {, g$ J% G

# B# I# g. ~: ?2 h; L, c+ L6 Q+ hthen c is 1
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* G* T- v% M' |4 D0 O. x& Ka = 2 - b 6 T# w# V3 }/ a9 x, [  Z

; U% z9 ~' q, H. h* Jso 0 = 0
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+ h2 m4 T$ l+ a: _. n- g

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:6 T1 _$ E+ a1 N# {$ g2 d
冇答案ga....8 x# a. a0 {$ \3 U3 @$ T, j
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2條equation solve 唔到3個unknown ga....

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: x: v9 U" ?; t; B此言差矣~
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8 R  h" Y: \& o2條equation solve 唔到3個unknown ga: d* w6 a- Q0 K
還欠一個條件,就是3條equation都是linear independent(線性無關)的0 E3 B. z# C5 D7 w! J7 i  ]

$ C% o0 o* \, V" \7 E1 S, s+ i簡單點說,多元一次方程就是線性方程的一個例子- w2 d  `4 e( s' F: l
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~)
! x. _# |, m; ~+ |" U例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# z9 w# x- D6 j1 `3 m$ {: t- \有興趣就解解看
  F" n+ ~3 G1 z1 T/ F6 Y不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:! q. g. t  _8 Y+ \6 I# G- W

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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:* u& r. I7 X" z
捉錯處就唔敢當
  V+ j! _9 q1 z4 j0 R! `; b8 Y不過,c=101n哥度(解...

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  Z4 H" r; _; C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
) x' r- @/ y) y* }4 a9 u反而適當地調節一下 , 咁會理性好多
! c  k# R- }  J; y7 v- o9 d0 l就好似隻game 由12粒珠 加到13粒珠咁
  A! ^: H! e) G2 Q- `當''堂''好玩哂0 W4 i+ w) j( c' U' P8 a
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:$ e/ ]' i: c! f  a$ w2 u

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p.s. 求''堂''字正寫...

) E# `; c) [* ^/ u. \已是正寫吧