sakura310

Filename: DSC01158.JPG
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2 W2 V3 C' B3 H7 x( f2008-01-18 00:25:24 | 阿感 | 2
& N1 l4 c. X. T$ Y# n% S2008-01-18 00:24:20 | playbr2 | 2
  w% W  _8 x% P  @3 i0 U- @# E  T2008-01-18 00:22:02 | 但丁 | 2
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# L' Y, B' i" q+ L' t3 |* p9 O0 I點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:( I  S- Q' {$ C' ?
Filename: DSC01158.JPG# j6 `% ?' F* p$ V+ U8 e
Datetime | Downloaded by | Counts0 P) _, U9 Y/ R% i* k
2008-01-18 00:25:24 | 阿感 | 24 Z0 i% K# u: t# N9 m, j6 u6 N& J
2008-01-18 00:24:20 | playbr2 | 2
: u" Y- N/ i( U0 Z! A1 T4 ~2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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9 f: R: Q; g" t1 Y: N  b! Y我第一次開睇左2秒就close 左$ Y& {9 o: U3 G" c; |" T. b
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
& r1 m. f2 w3 ~3 EFilename: DSC01158.JPG
5 M0 ^7 D" N9 B5 {$ }! h/ IDatetime | Downloaded by | Counts
- y7 l1 M- B% D9 l2008-01-18 00:25:24 | 阿感 | 26 [3 B' ?: g# E& I$ y( F
2008-01-18 00:24:20 | playbr2 | 2
, g' d3 s. `& C2008-01-18 00:22:02 | 但丁 | 25 B3 A4 k5 ^) Y+ L+ Y1 @
! G3 D( o7 q0 X( F/ R5 \- c
點解大家都down兩次? XD

8 _5 r0 i! R! a. }5 L' r2 L  i: e- M( }5 ]8 J% `! j& _( }
快d捉我錯處: E, U2 S1 b: C: G2 n, j8 u
話吾定我都打錯 + - 符號
2 {; d. F2 D' Y2 K* p係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當9 f1 j! \; u. x3 f& t/ e: e% P8 W
不過,c=101n哥度(解除n係正整數的限制,只是整數)
) H' Y# Z0 x; S4 G9 I" o: ?+ 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~)
- I6 V5 U5 Z+ ~$ c( b4 _0 j知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
. f8 y# g& y; Z4 G' |+ B- r但原先是不知答案,所以唔知有無失根  ?7 Y8 ~8 y, W* @( v2 B9 x( D8 @
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有時見到題目都感到有點不爽  G$ b2 t$ r1 z! I# w( @6 d  O
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1 a; Y- }7 q! c2 p4 _' {! f
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....* ^& A  f7 y  n% w' N8 @
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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:$ U- o/ a6 D. {7 A
冇答案ga....; e6 I+ k0 T7 W1 m( h: V
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2條equation solve 唔到3個unknown ga....

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+ ]5 @1 i. k& i7 `6 U3 ?: ^3 xagree
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+ `) V, I. g# v: S! v# c8 f2 equations 2 unknows
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8 R9 J) X1 ]3 e) C3 e  Y- M2 Eif 3 unknows there should be 3 equations
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make it simple
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say
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1 |. m# ?$ m6 Ea + b +c = 3
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% @) V' A. G% i" ra+b = 24 e" w7 i$ F5 d1 g( `, Q
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then c is 1 / i/ g! @# J: M( a, P2 T: \
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a = 2 - b
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# f7 }% A6 ^) x: W6 M' iso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
# A1 z/ P0 J7 Y冇答案ga....
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6 ~2 Q- k+ F/ ]5 i0 J; I2條equation solve 唔到3個unknown ga....

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此言差矣~9 n2 W. Z1 j9 g  N

9 B  ]) U% V3 N& B& @2條equation solve 唔到3個unknown ga* N9 I7 q' @2 @( C3 O, U
還欠一個條件,就是3條equation都是linear independent(線性無關)的! n% u$ Z+ W$ W2 k: c* T
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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
% x' a7 e: F4 V8 d. B+ ?" 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$ I# s: `/ @) t: C0 Q: q

2 G  m3 O( O. n. I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~)
8 L$ l* H3 x6 o/ H: |8 J, Q例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
# [0 L1 N! C# H' Z" D有興趣就解解看
2 t4 D5 j2 T1 H" v& V* p7 M- U不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:. l# S, I4 N1 D6 u9 q! |9 P1 Y- _
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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:
. Z3 P9 |  B- `  d; L  y捉錯處就唔敢當
7 s" e( C6 H7 A, N1 g' {不過,c=101n哥度(解...

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/ `0 r- G) b' u/ _' A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
/ J* [5 \/ `% I- [6 Z* |# B反而適當地調節一下 , 咁會理性好多$ T& g" u) \" i# p; b( Y
就好似隻game 由12粒珠 加到13粒珠咁# H! @+ M3 E' \9 X0 n
當''堂''好玩哂
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2 Z+ @: E$ C" I% X* e' vp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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" X" I! U8 ^; m1 r* ~9 G. ~p.s. 求''堂''字正寫...

. W) {( c0 m9 u9 j1 _已是正寫吧