sakura310

Filename: DSC01158.JPG: h% Q+ s! B3 Z& h, Q6 m- E
Datetime | Downloaded by | Counts
' u* U2 c- t4 R& O4 [: F% t: }2008-01-18 00:25:24 | 阿感 | 2
+ |4 D* A8 B7 o# w( O! w9 |2008-01-18 00:24:20 | playbr2 | 2; n1 U) }$ h. i) H- l
2008-01-18 00:22:02 | 但丁 | 2" c: k+ t. J% _

& h: j+ C' e* A& J4 {( ?$ l, C點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
9 X* y3 |3 s8 E) lFilename: DSC01158.JPG
. E3 e2 f2 n/ e6 O: `$ KDatetime | Downloaded by | Counts
* w8 I' G  v* ~- v) z( y2008-01-18 00:25:24 | 阿感 | 2, S" Q" X5 ^8 T9 f
2008-01-18 00:24:20 | playbr2 | 2
5 I" A/ G. Y; R) F" ~' X  G2008-01-18 00:22:02 | 但丁 | 2
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8 U  P2 \7 {0 `  f. o4 y點解大家都down兩次? XD

# w1 H, ]. D1 M, q/ |) t

/ X; g; L. D, l2 [  @1 g6 y, Z我第一次開睇左2秒就close 左
, p; l; `+ }7 S6 U( a6 x2 j之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:; ~8 O- q* A$ |3 A
Filename: DSC01158.JPG
0 V% O; @3 o2 @5 j  r( wDatetime | Downloaded by | Counts" N* d" k; l/ W2 v5 E
2008-01-18 00:25:24 | 阿感 | 2' k" s7 T4 p- `2 T2 T2 Z
2008-01-18 00:24:20 | playbr2 | 28 P2 V9 |  w8 u
2008-01-18 00:22:02 | 但丁 | 2' C0 u; P" Q$ r( H

6 y5 y& I( p% [; W' ~點解大家都down兩次? XD

! {( e# c6 }' G4 ~  f4 f$ N& H1 a; u
快d捉我錯處" Y- h1 ]9 M# b0 d7 H9 C+ o
話吾定我都打錯 + - 符號3 a; ^7 D' B0 y+ ^9 M
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
9 M+ w% p- ^* w2 E3 Q8 B& V8 \不過,c=101n哥度(解除n係正整數的限制,只是整數)
. L5 _' f: h- I& {! g/ t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~)
$ u7 u; e9 i' D知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
6 \, i5 m* c7 u6 g" u但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽
2 k0 ?5 c! f2 x9 C4 l$ e; 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
; G" T" w7 x2 o" 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....& x6 q; y! U( m# O* u

1 Q" a6 s; U6 r' b+ j8 a2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
- T: S0 d9 {+ ]$ h冇答案ga....
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2 |7 s$ `4 d; ]1 b4 ^2條equation solve 唔到3個unknown ga....

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0 C0 u. o. F& b9 h$ j4 @5 W" kagree 3 F! b" y. b  i: o& n

" y+ N9 |8 \$ F$ }1 T6 I, R2 equations 2 unknows: M5 D9 z) X8 V7 T; h
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if 3 unknows there should be 3 equations
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make it simple " F% p7 s: L" l0 |- K: G7 X
2 v2 y5 u2 u/ {
say
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6 a- h. i6 P  F8 }0 j5 J+ w+ o" K2 ?a + b +c = 3) J4 D3 c& ?! ?

$ K& {& u, m0 Da+b = 2' J* G! y3 P; ?; [* y; A& ^
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then c is 1 : Y- V/ W+ T8 g7 e, A
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a = 2 - b ! {7 |1 ], H+ W. q" G5 L* ~

2 l' y0 K6 _8 Y( fso 0 = 0
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9 g, H6 k( U, q: r& F  e

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:" h, e8 M- g) {
冇答案ga....( Q' K* ]! b; n' U) K4 Z

/ z6 o0 O" c, s3 |2條equation solve 唔到3個unknown ga....

7 _/ c# c+ d% l* ~( W
/ x9 G: s. \" v8 C3 O此言差矣~# o9 I# q# C: k5 ^0 U7 B2 f
; I$ ~6 @" d! u; |5 J8 d. \
2條equation solve 唔到3個unknown ga
1 W$ }7 w- Q6 y" }( _% C4 d. Q還欠一個條件,就是3條equation都是linear independent(線性無關)的
4 _$ W* x# O+ ]3 n: `8 Z; ?3 j8 Y1 d6 S4 S
簡單點說,多元一次方程就是線性方程的一個例子" X% H' w  n! M2 [% Y. i* q: 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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1 B3 N4 j; S# w7 U9 [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~)
# j, q  n, a, J. ?5 L- _例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解8 w' u+ w- V% F& f1 V5 u! U
有興趣就解解看
2 z) E7 N/ Y* C6 m1 c不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:/ q4 I6 @. A" R3 t# M$ L/ Q

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8 x5 B+ P: Q1 H2 H9 h0 }* |3 `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:$ H3 ~. \' t! i& g1 N; j
捉錯處就唔敢當& m2 k; K. f: f( \/ r3 E
不過,c=101n哥度(解...

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4 u  k& [, E  T7 ~8 a4 g
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/ ~  T" D+ j: n, \6 o. l5 C
反而適當地調節一下 , 咁會理性好多  A5 y% `: P1 n! P, `5 e  C
就好似隻game 由12粒珠 加到13粒珠咁, \" R' A  \- L6 [1 A2 N. P
當''堂''好玩哂
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# ?7 g8 c# V( Bp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:& d1 M, \  |" J1 m. L+ C% J

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5 r! {5 Y. ]* K- ?) pp.s. 求''堂''字正寫...

, _) `$ e% q5 \! ]. w7 ?
已是正寫吧