sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2) S) O; U& R; x1 A, x
2008-01-18 00:24:20 | playbr2 | 2  q# B+ f) h: u6 {
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:
, c1 f+ Y1 J; {Filename: DSC01158.JPG
0 ]3 k6 w2 w# N9 Z+ }! Z) W( C7 FDatetime | Downloaded by | Counts
% @8 \% h  s& L$ I$ q2008-01-18 00:25:24 | 阿感 | 2& G* o) n! O% [: H
2008-01-18 00:24:20 | playbr2 | 2
( K9 n# Q" P$ q# x2008-01-18 00:22:02 | 但丁 | 2' U: R  p% R  B* \( u

/ X# p$ Y0 ]7 Y, ~; @3 g% j. t! L點解大家都down兩次? XD

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# g7 N$ E2 x. R! {) n! L( q0 z5 K我第一次開睇左2秒就close 左5 y! _$ U6 z4 W+ a. @
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
' y9 X, K2 S4 O. C3 s$ R( iFilename: DSC01158.JPG. L! M9 B2 L: C& \1 h9 s- g3 w5 v
Datetime | Downloaded by | Counts# O) i, S) T# k7 v) C! |- z: O$ ~
2008-01-18 00:25:24 | 阿感 | 2; I9 Z2 i9 h6 O5 L! Y  V, f9 J
2008-01-18 00:24:20 | playbr2 | 2
& u, ^3 M: J- p  I& X; q2008-01-18 00:22:02 | 但丁 | 2, }. z/ P4 o/ e9 Z% v

2 o2 [6 r0 }5 c點解大家都down兩次? XD

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快d捉我錯處! F; @$ i, @/ w/ d
話吾定我都打錯 + - 符號
, {" ~) `  G' m& Y" D係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當/ d7 m1 Q! r# Z1 M* w
不過,c=101n哥度(解除n係正整數的限制,只是整數)4 ^3 N# f3 ^5 u* h5 F7 n7 P
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~)+ p- d: D( w$ e8 ~. _+ V: R
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題7 q. [. i3 m6 x
但原先是不知答案,所以唔知有無失根$ Z. G: l8 I" q, I% K# N' Y
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有時見到題目都感到有點不爽, G( s: T1 \. F$ q5 D( l# i3 A
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
6 q; A7 Z! u4 C. |+ d5 Z$ J+ j# C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:
% K, c1 V$ s/ b& K& }" C) T冇答案ga....  Q' }2 }8 y4 b: ?
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2條equation solve 唔到3個unknown ga....

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. \/ }  R+ Q' @0 T: a4 Pagree 8 [  }: [: X" z) ?; P" g& ?1 r4 I
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2 equations 2 unknows. o; A! I2 x% \# T
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if 3 unknows there should be 3 equations ( X0 [" \5 _+ L! o3 D1 m4 l

  L4 W+ Y# Q3 L3 h5 k% u' a# ^- \make it simple 7 c) j4 ^) h% s5 k8 i2 t  b% O
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say 0 R5 P7 X0 B: Y# ?7 Z

. P/ c  S! ~9 V) Ua + b +c = 3% B/ c5 g" V% ^

/ p  P; W% X5 \5 ~a+b = 2
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+ i0 @( g' k8 I9 s  V+ I# z- ~then c is 1
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9 k5 u% r- T6 \; r4 ^a = 2 - b
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# F! F% ~3 d( U& h0 lso 0 = 0 0 r$ g; }: t& |, r" Y! X3 Y" T6 Z
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:! M- y6 t' W9 c
冇答案ga....' {: B9 |' L" C% p" b$ `; @4 s; x, |
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2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga
$ T& q+ R# E; \3 i( d8 k還欠一個條件,就是3條equation都是linear independent(線性無關)的' e) J  o7 {, ?* E+ p
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簡單點說,多元一次方程就是線性方程的一個例子+ J! W! k9 l3 ]' \1 D
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~)* c1 t  Q' m" O% B3 P& ?
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
& G- p+ z+ e& c- S有興趣就解解看+ h3 J; t; m& m
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:: g1 d# @& U# ~# w1 w, E" t

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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:
3 V! J$ {0 w9 o& Q捉錯處就唔敢當
1 M0 T, I* R) m6 }, n5 W0 k2 Z0 R不過,c=101n哥度(解...

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+ d, i4 ~# c6 `' w6 K, e$ ?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 {" [* N% i3 _
反而適當地調節一下 , 咁會理性好多
# ?# }& s% g: {' P( U- _! w就好似隻game 由12粒珠 加到13粒珠咁0 ]+ w1 d. ]8 H/ y2 V( Z7 L
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:+ W. S% H( j. O1 O3 O0 |, [

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p.s. 求''堂''字正寫...

* o# U3 s1 h' g% c已是正寫吧