sakura310

Filename: DSC01158.JPG2 \% O! c5 U3 ~. V/ ?: O% y
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2008-01-18 00:25:24 | 阿感 | 2' x" V( [4 t8 j  h/ V
2008-01-18 00:24:20 | playbr2 | 2$ a1 b4 W" X0 E9 ^6 L
2008-01-18 00:22:02 | 但丁 | 2; b# e0 @* H! ^, A! }. n9 A3 Z. m
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:& N7 S4 u6 p* I. U- E4 E
Filename: DSC01158.JPG( x/ i( w( f( B7 Z: {
Datetime | Downloaded by | Counts! S) h9 D+ F9 y: R9 `
2008-01-18 00:25:24 | 阿感 | 2
, F1 G% F  n+ c2008-01-18 00:24:20 | playbr2 | 2, _2 N6 j3 i, [* p5 z* B8 _- b4 I
2008-01-18 00:22:02 | 但丁 | 2
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' ~( u% D$ t3 p1 r" a5 @4 B點解大家都down兩次? XD

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( J' a6 y- `+ r, m# M我第一次開睇左2秒就close 左! R  _5 F1 x- ?8 y  M- J
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, ^6 P1 u. T$ O4 Q
Filename: DSC01158.JPG) g1 c- e3 r0 f3 }5 V" n
Datetime | Downloaded by | Counts5 j- u7 w. n$ ?1 z
2008-01-18 00:25:24 | 阿感 | 2/ A6 v# {: a  e7 v
2008-01-18 00:24:20 | playbr2 | 2! i$ I0 g' j* a3 ~1 p: N
2008-01-18 00:22:02 | 但丁 | 2% j  `9 U9 V1 P$ K4 e6 |
1 Q9 M) F/ e" X% W& ^  {6 U/ h
點解大家都down兩次? XD

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快d捉我錯處
" x, F/ k, y- e& {( W話吾定我都打錯 + - 符號
% V9 u) j" a8 N$ i係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
/ u, e% \, {& u2 G8 o# ^  P不過,c=101n哥度(解除n係正整數的限制,只是整數)
) P% `- Z. D, n+ Z; }+ N0 Y7 q2 r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~)
* u: `! q1 M. a5 ^1 o% p- P知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
6 T) a9 `; z/ B# w- I+ M但原先是不知答案,所以唔知有無失根5 C: q# V, X9 U; i. b/ c1 M# g

1 T5 t. c! `' G4 B$ S9 Y有時見到題目都感到有點不爽
" T, c. o9 ]7 S/ x* |6 `6 d) [7 U2 W* ^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
" U# \3 P1 ~* S1 m' \; _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....0 R8 ?% Z( d# `$ `
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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:* E4 Z* j0 r% q+ z+ V. W- e3 d& o; }5 D
冇答案ga....1 E3 N" I+ J" H/ _9 I) u
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2條equation solve 唔到3個unknown ga....

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( P5 B6 Y% Y% G- P+ c/ b7 e) Magree 3 G3 C- M" G. `5 A9 T* E
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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& M8 }& Z8 k2 p1 \1 q0 mmake it simple ) g$ `+ X6 N/ w5 q) n5 v

. q0 K9 }- N$ E( u6 e; X1 Dsay
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a + b +c = 3
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) G( ]+ q$ O8 Y. k5 aa+b = 2. N) T# K/ n; [
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then c is 1 ( ^( y6 n: z! S- I/ c" I6 P$ Q
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a = 2 - b
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0 C2 [1 P: z6 X6 Z( n2 e7 X2 _9 cso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:  c/ q( C) s4 b5 n
冇答案ga....
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0 _8 K$ h: c7 n5 @( Q" [/ n2條equation solve 唔到3個unknown ga....

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4 }2 s8 R# P. Q$ I3 N5 C/ M: ^/ @此言差矣~
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7 N# \! ]9 \6 y0 ]8 Y+ ^, t2條equation solve 唔到3個unknown ga
1 l) [& `) ?4 r& E% g還欠一個條件,就是3條equation都是linear independent(線性無關)的
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- z+ ?% a5 X- G. _簡單點說,多元一次方程就是線性方程的一個例子, J' _- h$ I6 n5 `# ?8 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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, Q4 a# n7 n9 q7 M) j8 \  _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~)% o% `; @$ [0 S. V% u
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 T! C! h1 i$ \$ W) T) p- S有興趣就解解看
% Z6 G3 v3 Z, v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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& `; g3 k8 c4 T! K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:
2 L6 o9 e+ K6 G  K6 J% K9 a捉錯處就唔敢當" r0 Z, a; `- C
不過,c=101n哥度(解...

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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' _, p. x: N" ?7 G' O
反而適當地調節一下 , 咁會理性好多# \5 T9 `3 a4 G6 |! }. J& \( Q) T
就好似隻game 由12粒珠 加到13粒珠咁
* d8 e$ c# B  L當''堂''好玩哂
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2 T  O1 \6 X% m0 `- Cp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:; `% s( b4 k, s& \+ m! l1 I  q5 ]

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p.s. 求''堂''字正寫...

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已是正寫吧