sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
. k' M" j+ E/ j$ _" Q# v. o' z& C2008-01-18 00:24:20 | playbr2 | 2
' d* Z' s* j7 a' |1 [; |$ S: a2008-01-18 00:22:02 | 但丁 | 2- u) r9 @: [7 q

2 {$ z5 C, N- G# T" J" _0 _點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
7 p$ [( [4 z8 c5 GFilename: DSC01158.JPG6 C7 F$ g2 c; v( @8 b
Datetime | Downloaded by | Counts3 ~: E+ V7 Y) M$ ^
2008-01-18 00:25:24 | 阿感 | 2
, }; M6 x! a3 Z- g2 Y9 r+ L2008-01-18 00:24:20 | playbr2 | 26 R" @% h/ t" d: j
2008-01-18 00:22:02 | 但丁 | 2  ]' |5 s: `) ^, U9 a
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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9 {! u/ M- F. \* v0 g- U
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:" W7 t  X3 E# `* m$ C
Filename: DSC01158.JPG" l$ V% g6 H9 O! R; M
Datetime | Downloaded by | Counts
1 S9 N+ W! c6 ]! H7 g2008-01-18 00:25:24 | 阿感 | 2( A' b" N, P* p7 S; i; S0 n
2008-01-18 00:24:20 | playbr2 | 2
' z) [8 b8 C2 ~2008-01-18 00:22:02 | 但丁 | 2
5 X# ~7 B: {' c- v) n/ y' G3 A9 ^4 P& B% S
點解大家都down兩次? XD

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快d捉我錯處
3 M" i8 C; u! p  L0 y話吾定我都打錯 + - 符號$ @' D6 z% t$ L& i  C
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
. J' \: H6 H( Z$ J/ T2 E+ L) F- B# O不過,c=101n哥度(解除n係正整數的限制,只是整數)
6 }& F) C! W# b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~)" n* n  J1 f6 H- E$ A5 D( i% ?
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
; Q! G9 e$ j% R* u, o) j但原先是不知答案,所以唔知有無失根
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5 p9 m" l9 t5 U( O4 j有時見到題目都感到有點不爽
2 K  ?& X1 l4 _9 D" ]4 ]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2 v, y8 t) C7 x9 \, f& B1 q4 e6 `
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....3 O/ e: G2 a) p+ a. A
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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:
) y$ W+ n/ W/ k! Z. ]- G& Q冇答案ga....
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& h. p  r* N/ m: E7 h/ I' b2條equation solve 唔到3個unknown ga....

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0 Q  m: l' L9 j6 m) Lagree / y8 s# H' }5 Q8 s) {5 g4 Z
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2 equations 2 unknows  ?1 f4 U8 `3 C! {" A3 I# @

5 K% `% Z" u( |' }if 3 unknows there should be 3 equations
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make it simple ( |# u' \: N% S  C( k. k

& {+ l8 X7 u0 B1 R. n  lsay
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a + b +c = 37 Z* v+ m, O2 q9 U* S2 W+ v0 C

; J+ Q6 B# ]# o& V% B6 a& Ra+b = 2
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then c is 1 * p4 g' `3 c1 l$ `2 ?
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a = 2 - b 4 [4 u% K% i0 s! W  k; H
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so 0 = 0 4 J- f) z% c8 _, j5 H% ?( V) \

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:& h& b2 q0 t# S! h
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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# c( \  O' u8 c' i  b1 \此言差矣~, o2 y5 [1 Q( m4 `0 k
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2條equation solve 唔到3個unknown ga* m  c% O* {8 ]' r7 ?7 q
還欠一個條件,就是3條equation都是linear independent(線性無關)的  r+ O: R1 U- p! N
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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
. o& `0 R: L6 I0 N) J- W3 ?3 F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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, L" T0 _* d0 n; L9 I; y+ x5 B% h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~)- H6 w: i3 \, t. s
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解" S7 h- Z$ _2 r
有興趣就解解看7 U+ q* g5 x, d; e
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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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:' H0 L5 Z# ~# ^) g6 Y& ~3 n8 H3 {7 n
捉錯處就唔敢當7 m! S7 e3 Z" s7 g
不過,c=101n哥度(解...

1 n6 D' b# `; m9 [! x+ X9 s: @. i, z1 q' {* m6 D
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  U( e  `) C反而適當地調節一下 , 咁會理性好多
/ F3 q1 h0 U# f  v1 s就好似隻game 由12粒珠 加到13粒珠咁
0 u( G# a" @& W: W+ ?當''堂''好玩哂
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2 R1 ~5 ?5 T# z! F) j% up.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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/ |! I) x  ~. B# Zp.s. 求''堂''字正寫...

7 _2 V: @0 l' [2 D4 Q7 d已是正寫吧