sakura310

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2008-01-18 00:25:24 | 阿感 | 2
1 [. a9 `2 Y) }1 `3 R7 ?2008-01-18 00:24:20 | playbr2 | 2  x3 }5 T0 z( O) x0 @
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:+ z" Q- ?5 `6 x2 D# @
Filename: DSC01158.JPG" x: N6 a. ~- \- I  P0 Q
Datetime | Downloaded by | Counts
- v+ h1 ~& |; E- t' A+ F2008-01-18 00:25:24 | 阿感 | 2
; R% r* \& D/ `) R. z2008-01-18 00:24:20 | playbr2 | 2
* E+ V4 u, g# i$ r7 d0 _$ R1 q% \2008-01-18 00:22:02 | 但丁 | 2
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  n7 S* e7 e  V2 H: h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3 n6 F+ W0 a- c# a1 R% F- D( U
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
6 t' Y- e: D' s; O' g" ~Filename: DSC01158.JPG$ O+ A/ T: Z' f- e4 j" e
Datetime | Downloaded by | Counts! d9 ?, F9 |8 E5 P3 a
2008-01-18 00:25:24 | 阿感 | 2
( N* H+ M7 L! G6 T' r2008-01-18 00:24:20 | playbr2 | 2, n$ Y! j- z9 }$ @! v8 Q) L1 X
2008-01-18 00:22:02 | 但丁 | 2
- S2 F3 h% h5 e5 p9 d7 K# Q8 o2 J/ M$ t* d, I/ h
點解大家都down兩次? XD

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( k2 X* x4 _4 S5 q. Y快d捉我錯處# A( ^2 h# R- O+ {; E" i0 Q& Z
話吾定我都打錯 + - 符號
, ]! {7 _9 T# H& D6 [* V係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
+ j1 [4 J0 U( ^/ a& H# t# P不過,c=101n哥度(解除n係正整數的限制,只是整數). m: V+ E3 k4 y* c7 i# 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~)
7 S& B; `$ E! u. q知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題) P; K  Z3 L0 g8 e
但原先是不知答案,所以唔知有無失根/ u5 C6 a1 \% `! R" o( j+ r

5 ]" R7 L) U6 M2 ]9 F有時見到題目都感到有點不爽  J: B5 f: b1 y* a5 r' F( W7 H
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; z1 X$ \! P- }4 X! I0 f. S* 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....
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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:" F- s( P: V, d' F
冇答案ga....
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& i- @7 s  |# y  Q6 |2條equation solve 唔到3個unknown ga....

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agree ' m" T/ n2 q! N. j# h+ R" X

# F/ a  M( H" c$ W2 equations 2 unknows
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  q4 M! }/ S+ w0 Z! k; uif 3 unknows there should be 3 equations : U  N% g0 ^; p3 k

- I3 o4 q5 x* F# u) y, Imake it simple
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' f* a# g8 j% U! vsay
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a + b +c = 3) i1 n) H* ^* G

, Q7 V; H' B3 G3 k, E2 wa+b = 27 s8 ~( T/ Y) |
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then c is 1 5 _' d3 o# D/ M7 S

/ ^+ |3 |9 C" `" U( ja = 2 - b
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1 {. S7 b6 \  U5 p/ X/ u; Yso 0 = 0 5 A8 m# ?& T8 m8 x) J. t' k# W8 |
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:1 |6 ?0 b5 g' g/ @* ~, w( A
冇答案ga....
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  a9 _4 Z% z5 G  Y2條equation solve 唔到3個unknown ga....

* [( h/ D9 J7 U& H4 F2 `7 `& g( y
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此言差矣~
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2條equation solve 唔到3個unknown ga; E- C; D/ x6 V7 R  w! r1 `
還欠一個條件,就是3條equation都是linear independent(線性無關)的) H% X" Q4 o$ ?5 R" b2 z/ {

; r, N; _* a9 o& o7 e# P% f簡單點說,多元一次方程就是線性方程的一個例子
, ]( {0 T. u/ T4 {+ h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8 g# o/ n4 i, Y7 c$ w3 P5 y
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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~)
! j5 Q9 S  }* w1 ?$ h例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解* L2 N! |/ v! W
有興趣就解解看
% }6 H0 Z! M: r& V不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:+ c- N* S+ ?( s# b
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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:
: y/ ~8 ~$ K* D2 u( {捉錯處就唔敢當$ ?  v& k+ t. W9 z
不過,c=101n哥度(解...

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9 H) x  t6 E6 q6 w# l: R8 A$ I3 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- w! X4 J4 x2 ~
反而適當地調節一下 , 咁會理性好多
8 v4 B0 K2 @4 A  g就好似隻game 由12粒珠 加到13粒珠咁
( m4 X% D) f1 o2 ]2 w3 Z當''堂''好玩哂- p) [! i5 ~" o" X# H
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:! K! i$ M' Z' V- _6 F0 X: r% a

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p.s. 求''堂''字正寫...

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已是正寫吧