sakura310

Filename: DSC01158.JPG# \6 y; z( h$ O) j8 [7 `8 w
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& Y9 L8 z3 z* a/ N4 d2008-01-18 00:25:24 | 阿感 | 2  l$ ]( P/ n! u$ `" i; Y: m+ r
2008-01-18 00:24:20 | playbr2 | 2% _' H$ @+ n; p
2008-01-18 00:22:02 | 但丁 | 2& e4 v4 o+ }) A6 h% @% {

5 s  g% [& @, e/ o; z" H點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:4 R7 i$ F. Z/ x
Filename: DSC01158.JPG/ q: D% |' M8 [
Datetime | Downloaded by | Counts
: |, f3 d* b- G  A- i. B' U$ T2008-01-18 00:25:24 | 阿感 | 27 m7 j2 [" m; U' _( U8 V! X/ m, p
2008-01-18 00:24:20 | playbr2 | 28 v3 }5 M1 e  K5 P. w
2008-01-18 00:22:02 | 但丁 | 2
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6 c0 N9 p! {; J7 Z! Q+ V點解大家都down兩次? XD

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5 }$ ]$ O( ^9 R" O  D我第一次開睇左2秒就close 左
3 R1 }% L/ `. F之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
+ X  t5 |0 V+ s' A8 P: u. h( T) q$ tFilename: DSC01158.JPG
1 c. ~0 U( p0 E4 p0 ?5 kDatetime | Downloaded by | Counts* D: X8 i4 w/ z# p& B  x
2008-01-18 00:25:24 | 阿感 | 2
) p! o' f: p3 D6 e) s2008-01-18 00:24:20 | playbr2 | 2) O( g, P1 k, D/ ^
2008-01-18 00:22:02 | 但丁 | 2
; S& A7 }. L& A, S
" o  v, \) x+ G8 N. l- f點解大家都down兩次? XD

1 r9 l) H  Q+ h) I. E( O$ p1 }+ I  n+ i7 _* o
快d捉我錯處
4 H* {) H) n) {) G話吾定我都打錯 + - 符號; }( o" L' D7 p7 {1 A5 C* B7 U8 N
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當2 d' [0 j3 x" ]$ O
不過,c=101n哥度(解除n係正整數的限制,只是整數)
. O7 h5 J! r8 ^/ U) ~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~)
3 S, {' g$ y5 t8 q知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
$ M/ l# X/ a5 D6 ]/ n但原先是不知答案,所以唔知有無失根6 N) b3 I( X7 g& x  Q
4 W- c2 V% o! O
有時見到題目都感到有點不爽8 Z/ E% |8 ^7 k6 @$ X  g6 Z7 _
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! i. x* r2 a0 n) Q2 A
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..../ m* O9 ]# D4 P& C5 ?) q
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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:3 r  `! g5 I* H8 P7 i3 Z+ L
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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9 n3 \- p9 F; Z6 {/ L+ _agree 4 ^4 Q* t/ d& @: n  K4 G8 A

6 U; U. V" H2 f) l8 f' Q4 o2 equations 2 unknows
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% R/ I! W' \/ A% |0 qif 3 unknows there should be 3 equations
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) }  T. z9 G, R3 _0 S/ @make it simple
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say 0 x; h8 t% j6 R; ]" J$ [; _9 T
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a + b +c = 38 z6 O  D! J3 P" Z, ~

1 K* o( v& o7 E+ fa+b = 2
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then c is 1
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, i! `+ g# U1 w1 L- G( h) m, Ba = 2 - b
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- m# R0 B$ C2 u# H# j3 `so 0 = 0
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$ C: b, B7 H3 |& J/ u

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:4 v/ S1 j7 `) X: [' D
冇答案ga....# h! V7 r" r. u& {- m7 D1 Y* c( @

* x& K5 U, N) E/ d2條equation solve 唔到3個unknown ga....

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% L! a7 p5 }+ V, i此言差矣~
/ n3 v3 J4 \. E& J% c
  `, T0 M! R5 L9 j( t2條equation solve 唔到3個unknown ga
. O# `( R8 A+ e還欠一個條件,就是3條equation都是linear independent(線性無關)的
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* p  g% D4 ~5 m0 d: e' d* ~簡單點說,多元一次方程就是線性方程的一個例子' g  Z( g* Y; x7 H+ G% ]/ Q$ `
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1 l+ [0 D( f2 W3 ?
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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~). Y: N% C! m5 H4 d
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解* M7 c- I: }& p/ h4 `! M5 k
有興趣就解解看
, \) g3 h& W7 A8 w+ B% S+ b6 m不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:0 \/ V5 E$ ~! g) S# ~
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8 \) p+ R2 B. O+ P) E) @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:' ~+ z4 a" N) c
捉錯處就唔敢當
. Z( C6 h) E) r# i$ s不過,c=101n哥度(解...

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9 N! ~  q6 k- t6 U# f7 \. A9 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
! `7 Z" }2 B1 ~$ N  b" D* g反而適當地調節一下 , 咁會理性好多5 G7 A) s# m9 m" H* r; Y
就好似隻game 由12粒珠 加到13粒珠咁/ ~8 v' I6 G9 M- K: g% K5 }
當''堂''好玩哂# n' P7 v4 \+ ]% v

0 ~) B/ H3 I" J8 d. hp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:7 k2 ^2 z& V( ^2 M
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' _! R$ C, a5 cp.s. 求''堂''字正寫...

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已是正寫吧