sakura310

Filename: DSC01158.JPG+ c) r5 I. U* U
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0 c, e% h1 p7 b' C  z" w2008-01-18 00:25:24 | 阿感 | 2; m# R+ ^# _4 F" W, Y5 T' ^% Q3 o+ }
2008-01-18 00:24:20 | playbr2 | 26 R; D8 S, k! W9 X' G5 w9 ^* @
2008-01-18 00:22:02 | 但丁 | 29 E1 ~4 M  r( t3 V
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:' Q% s' x. w! F3 A1 d6 ~
Filename: DSC01158.JPG
$ k1 O1 B# T5 A9 a* CDatetime | Downloaded by | Counts
9 Y; E' D! f4 F6 p" Z+ x2008-01-18 00:25:24 | 阿感 | 2
" o* X) ^: v+ q" ?# z( c( d6 T2008-01-18 00:24:20 | playbr2 | 20 U) |7 Y0 a' D
2008-01-18 00:22:02 | 但丁 | 2
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/ N: T5 i) N# Y, e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" N4 R9 e- }' L
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
  B# Z0 J: M$ t/ d- L0 J4 xFilename: DSC01158.JPG
8 \5 J6 o! H3 A- pDatetime | Downloaded by | Counts
' D9 @+ `8 [8 y% c6 k3 G" n2008-01-18 00:25:24 | 阿感 | 2
! R2 p' `6 i! l6 O' E2008-01-18 00:24:20 | playbr2 | 2, J  `+ k" v2 f- t0 G. p! r" [
2008-01-18 00:22:02 | 但丁 | 2) s6 S9 t1 W7 `& j
7 F* b4 c- Y5 a' A/ P9 o
點解大家都down兩次? XD

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快d捉我錯處
2 k' c3 o% P  k( m8 _4 B' Y話吾定我都打錯 + - 符號
7 d: p; e6 L8 Y3 h5 j) E7 F係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當- j, O: Q% D) Z9 h- S$ X1 [2 F
不過,c=101n哥度(解除n係正整數的限制,只是整數)9 S. G, n$ t$ D
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~)2 [7 s- U, T4 A2 G; ]# \
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題5 ^- G; O6 c  S: K$ T3 V# q% m1 h
但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽4 c9 [: w+ R5 ~9 H3 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
! z( e! ~; e1 a0 u9 H( L; O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..../ s7 y# o0 J$ Q' R
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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:1 a3 k0 r3 J* `! ?; T
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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3 y: L% N2 n! \2 equations 2 unknows
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if 3 unknows there should be 3 equations
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6 [9 K7 Q4 ]1 m- U4 S$ ^make it simple 9 J) u4 R) F6 O' f6 _
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say ) D8 ~! ?: x" |$ b( E& V: N$ y

, V" e/ a5 l7 s  r* [7 w5 [6 ?a + b +c = 3
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a+b = 22 T5 M: E$ k' R- D+ L& H6 _- ~

* E( y" Q/ K( m. }  z& {: Mthen c is 1 # p& ?9 m9 M4 q  b/ W) S

1 J7 v# q: S* Za = 2 - b
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so 0 = 0 9 L4 ~& ^' W/ w
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
4 ?3 x9 j! Y* _/ I' f- p5 n冇答案ga....: `/ w4 E2 I0 U8 l4 j7 m% S9 p$ f

- \, |" ]) j$ z* N2條equation solve 唔到3個unknown ga....

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6 f# ~4 w# k' _( w8 b3 L; {此言差矣~
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% n- B) r" w3 p8 a+ y  r2條equation solve 唔到3個unknown ga
0 o7 S' x: Q# c$ e4 g. g' D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0 t1 y  f% Z; k* J
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~)
: k# ~- Y; v6 L1 k# J例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解6 _; e; o2 m8 M
有興趣就解解看1 R9 P; v$ c' Q: V  T
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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* q4 g/ q. H, d) ]8 |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:+ T3 E# d. [' z; J+ Z, D4 B9 t/ n7 [8 s
捉錯處就唔敢當
4 r& j7 K( c& u: [( f不過,c=101n哥度(解...

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) P7 }% [4 R- q: c) l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
& Y% v' M" H1 u- e/ [. b反而適當地調節一下 , 咁會理性好多
& l  x: B3 j' U8 c& \" W1 d4 g# {就好似隻game 由12粒珠 加到13粒珠咁- {% l4 w0 U, A! ]% g# D& N
當''堂''好玩哂& Q1 P8 ~) F0 M- {

( m/ K7 s" W; {( np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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2 F( o6 t# I: K. F5 m  u) Lp.s. 求''堂''字正寫...

6 A9 s2 C/ A, S. M已是正寫吧