sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2/ Y* Y: A" p4 R  j+ P
2008-01-18 00:24:20 | playbr2 | 2* q& W0 M) b" {1 Z& d% ~+ B5 C
2008-01-18 00:22:02 | 但丁 | 27 f) y* e$ W/ |( \

" |( y  P- r8 m1 \4 m* @0 T  P$ j點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
* P% k- e7 S$ W8 }0 lFilename: DSC01158.JPG- b$ S; E: i2 g" }* L+ O
Datetime | Downloaded by | Counts
2 `4 a. ?! F7 c5 N" z2008-01-18 00:25:24 | 阿感 | 2
# F: m/ x+ X* f/ Q# k5 D# Q2008-01-18 00:24:20 | playbr2 | 2
2 [0 h! @7 a! h( V7 Y  C2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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$ m$ g: ^3 v: O% h我第一次開睇左2秒就close 左
2 W0 N( ?) }! k  k之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( r. r5 ?, X" k0 @* F) Z
Filename: DSC01158.JPG' F/ [! }5 w4 f1 r; W, Q! L4 J* m' r
Datetime | Downloaded by | Counts
4 x) g" `8 A. e2008-01-18 00:25:24 | 阿感 | 2# }" W$ h) X; h
2008-01-18 00:24:20 | playbr2 | 2
9 b7 Q! K! e1 t1 y* h1 l* q2008-01-18 00:22:02 | 但丁 | 2
3 {1 Z: R6 T1 F
2 M9 O2 Z! l; z4 U$ O7 L: p5 q; T8 o點解大家都down兩次? XD

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快d捉我錯處
* P- j' i7 r% {' d3 d9 D7 g話吾定我都打錯 + - 符號
" N# a6 h# t; n係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
* p% S! P- W& d6 f不過,c=101n哥度(解除n係正整數的限制,只是整數)" c7 A5 B) q3 J5 ^/ A3 p9 j
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~)" y! w/ }/ P$ F% O7 g& G: a& s/ {
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
' |3 J- u7 H% I; a0 R$ @但原先是不知答案,所以唔知有無失根2 }7 `* }$ X9 I- L  q* b* o
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有時見到題目都感到有點不爽1 w5 b1 ~6 K/ @% G" [3 G7 L
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7 J+ e9 P+ o4 m$ u+ ^9 N- r
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....6 z4 C+ `- s5 T8 E& }1 I
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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:  W3 c2 i- e3 y- C; E
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree 7 F7 Z: q+ Y1 N$ Z( U

8 \$ |7 c) [- s8 z2 equations 2 unknows
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if 3 unknows there should be 3 equations ; J- N& L* U5 j' u7 F% z2 r. T5 w

4 p4 d5 `) H7 {" u, t5 w+ {make it simple % E$ j& ^. _- W( W4 O" T2 R. s
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say 0 ?+ V4 {( K2 g! s: k

1 z) W4 H: ~& ~a + b +c = 34 g1 o) N% b1 `* |2 I
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a+b = 2+ D2 i4 I" ^8 Y4 O6 X
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then c is 1
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:/ E$ N4 _) \6 Z% |3 W% E
冇答案ga....: S& S6 ]# `( S

5 p' c- ]+ r4 ^4 ?, x+ G6 |2條equation solve 唔到3個unknown ga....

  l6 B- }5 t) m2 q, ~% @, I5 p) \4 \
此言差矣~
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6 \( Z7 z# F) S9 W5 v2條equation solve 唔到3個unknown ga
. {: D3 k" `$ L; ?. W! c9 i# b6 l) C還欠一個條件,就是3條equation都是linear independent(線性無關)的- j: s6 l2 i( h' t# J6 M$ q$ p7 E

1 r5 T+ E, j7 f" G3 j0 Q簡單點說,多元一次方程就是線性方程的一個例子$ h& I' g+ k# e: E
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~)% U  H# @! X- D$ N
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
, U  }$ V) X! k2 F8 n( P+ p! y有興趣就解解看
+ r1 g/ p3 d7 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:
' r& `# [* A5 r. l8 T捉錯處就唔敢當& M9 q" I$ U) F
不過,c=101n哥度(解...

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' f+ f4 s& u  `2 w" e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) l) {- Y2 K9 X- B# _/ I
反而適當地調節一下 , 咁會理性好多
" D* h& }; ?7 C  X就好似隻game 由12粒珠 加到13粒珠咁
  I7 w' P8 H. j4 A; V9 U8 Q! L當''堂''好玩哂* S/ C* O( B- a) P+ P

4 h0 h( ]2 Q% J  m! up.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:7 T7 f; W% V3 B7 T

, _3 q! W2 O1 {6 j8 W' t: Q. {( U4 `- @% W+ }( k  G
p.s. 求''堂''字正寫...

/ B) F: T2 U+ G) i6 c2 M( }7 _已是正寫吧