sakura310

Filename: DSC01158.JPG7 g& f3 T! A3 d* Z2 j
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2008-01-18 00:25:24 | 阿感 | 2# i$ u- E1 Z9 z2 W  ^" Q$ [7 h
2008-01-18 00:24:20 | playbr2 | 22 z& T: R% o+ L, l7 x! c
2008-01-18 00:22:02 | 但丁 | 2
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6 m7 B3 F2 B2 N點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
/ S! q* N% W, a0 `Filename: DSC01158.JPG
: {+ G6 ?* r1 I9 bDatetime | Downloaded by | Counts
4 T+ @% N& Q) t9 g: ]+ t2008-01-18 00:25:24 | 阿感 | 2- l0 k' e8 p9 ?4 r: e  ]
2008-01-18 00:24:20 | playbr2 | 2
2 `  J* z/ i; Y: d8 ^. v; @2008-01-18 00:22:02 | 但丁 | 2) d" @$ S5 b0 b0 `# K) G
5 A. L, N& ^" L3 C, _  g) ?
點解大家都down兩次? XD

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& `  E7 O. a$ Z. Y2 z' B我第一次開睇左2秒就close 左
, o" I- Y/ u5 |) C" s之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
' f, f6 U7 s6 DFilename: DSC01158.JPG
1 P# M2 l' Q% HDatetime | Downloaded by | Counts4 U6 H9 K& n) }% q) a; ]; J
2008-01-18 00:25:24 | 阿感 | 2
! a2 y+ ?* Q8 j1 |; `# T2008-01-18 00:24:20 | playbr2 | 2* Q- m& @/ D- l0 b5 d9 d
2008-01-18 00:22:02 | 但丁 | 2) \2 ?4 E6 T4 j; F- J; _2 n0 y
4 b, F4 y# g% ^- @4 [
點解大家都down兩次? XD

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+ L( f. n9 I9 Y# H& X快d捉我錯處
) u# t$ E( Q# V話吾定我都打錯 + - 符號
+ u6 h# v7 e: q係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當& o' A4 ^% D" j9 V  L
不過,c=101n哥度(解除n係正整數的限制,只是整數)0 B9 m7 e1 u, i3 d4 E7 w9 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~)5 H  F7 N0 U6 I6 ~( v
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
- e& s, _; i0 F. n0 B5 P但原先是不知答案,所以唔知有無失根
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4 ~& G( w$ P# Z5 W有時見到題目都感到有點不爽) {! |, a, n+ T' a2 w6 _+ 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
; y7 z1 G+ v6 z# w$ I1 s3 p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:
0 |; B6 w) @$ |1 v冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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' m) m% C0 s7 r; d4 f9 O2 equations 2 unknows
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$ S' c% W" d, Fif 3 unknows there should be 3 equations
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  g4 o, N& f; ]) Nmake it simple
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say
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/ H5 ?: G3 q/ {3 `, L- J1 r9 _% ua + b +c = 3
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a+b = 2
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# b4 K$ H2 V5 r  h0 u' a9 P' Athen c is 1
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6 J; J; S2 `% U$ @6 _' ^a = 2 - b
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so 0 = 0 + L/ O8 W' _' k8 t
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
) K9 d+ b$ v# N3 Y  H1 {* u2 k8 x/ U  f冇答案ga....( h8 d) U4 E# q" G
9 A$ [8 Q( E: h2 I
2條equation solve 唔到3個unknown ga....

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5 o, A, H8 I4 q% G8 i! ~, E此言差矣~
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6 d# y- Z  d- E# d2條equation solve 唔到3個unknown ga8 B7 H+ \) |1 x& ~
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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6 G8 Q  q: q9 p
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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  E5 W) c$ f5 A1 F" ?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~)
) q  Z( K+ c5 D7 {0 Z# b. v例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
5 u1 x5 ]( j; v  _% T3 }, E0 p: x" I) \有興趣就解解看
" E1 D; Z. i8 v- b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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0 n* [$ H% u/ a+ P2 R( e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:& y5 F+ _' Y$ w
捉錯處就唔敢當1 X( j( D& `9 \2 _( x+ [
不過,c=101n哥度(解...

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+ S9 f) D1 C+ F6 B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
0 L2 A: W) M( ]; g反而適當地調節一下 , 咁會理性好多+ `" p, ?. i/ S+ |2 U% f2 L
就好似隻game 由12粒珠 加到13粒珠咁$ x1 D) ^/ k- c0 x- C! g5 y
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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. \/ ]) i- t$ O+ j- ^+ Hp.s. 求''堂''字正寫...

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已是正寫吧