sakura310

Filename: DSC01158.JPG
7 |% d" W2 t, i2 E$ {: D7 o4 JDatetime | Downloaded by | Counts
( O3 j, |5 A9 G( S2008-01-18 00:25:24 | 阿感 | 2) _5 A% u8 M5 G: B( {
2008-01-18 00:24:20 | playbr2 | 2; R* L" Q2 ~8 S' O' i
2008-01-18 00:22:02 | 但丁 | 26 H+ U! h" \' Y5 v1 v) i( X! Y

5 @5 |4 i, p4 s4 Q, C% y點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:/ x8 ]# i- u9 c
Filename: DSC01158.JPG( C3 `" T  y$ ]  O2 l! w% _) O
Datetime | Downloaded by | Counts
( G# H# h0 u/ `; F5 B# q2008-01-18 00:25:24 | 阿感 | 2# ^/ q% u: p! K, [+ J4 V
2008-01-18 00:24:20 | playbr2 | 26 G: ]: A) \+ F
2008-01-18 00:22:02 | 但丁 | 26 t& m& B9 _- k3 r4 M) j9 e5 j+ _
3 ~6 y  r$ |  N  K$ ]; }  a
點解大家都down兩次? XD

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% A$ P7 b' T1 I# s7 y我第一次開睇左2秒就close 左
7 q8 W# u' B% J7 Q  _* J之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
. f1 v$ C$ F9 F$ Z8 bFilename: DSC01158.JPG; d8 F/ o5 {; E% Z) N/ P$ C
Datetime | Downloaded by | Counts; h  d/ k2 @# L5 L  j/ O- g
2008-01-18 00:25:24 | 阿感 | 26 T- F/ |' R3 c* {! z, s
2008-01-18 00:24:20 | playbr2 | 2
+ ?# m3 ]& B  I6 x, \2008-01-18 00:22:02 | 但丁 | 22 |9 B+ B0 K; Z+ q
8 S: T9 n. ]# k2 O. B4 y9 B
點解大家都down兩次? XD

  z7 t; t$ M" S4 j) J
+ p( a. T% g& Y快d捉我錯處
5 L' s+ F6 G' v  ~5 c: ?7 m話吾定我都打錯 + - 符號1 G: @5 s' J. v6 G& e
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當, _. u. o! n* d. n( z8 Q) Z7 n
不過,c=101n哥度(解除n係正整數的限制,只是整數); y1 y+ K, y- ?: I7 ?: S
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~)& Q& t! c6 k+ Y  U+ v0 A
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題  e' V3 @& {$ b
但原先是不知答案,所以唔知有無失根; o( l2 R/ x% z

) p' a3 v! p2 E0 F7 C有時見到題目都感到有點不爽/ a) h; m: ~+ k! x' n
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
. ^! Z3 d8 t% @1 g! b- E7 U7 t2 T4 r5 [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....1 ]* Q7 a9 W# b+ |6 z1 U2 n

' ~* X( h4 h! y& Y9 g; T, U% S2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
0 Z# r( r8 V- T* z6 f. O7 |# I9 k' Q冇答案ga....' T; c7 ~* d. S5 A
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2條equation solve 唔到3個unknown ga....

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) B" m, }6 a. r% |; Tagree . d9 U7 @+ z3 s- c1 k6 H
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2 equations 2 unknows: V  L: l2 I/ Y2 G5 Z
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if 3 unknows there should be 3 equations 1 H- k) \+ b2 W- T; L

; i& @7 Y6 C" \  X+ q9 w8 omake it simple 3 Y0 Y9 U0 A3 S0 m. z$ O

: o! d& ^; {* A3 H! J$ |3 V+ Dsay 4 m. N$ Q( \! k+ C8 c

7 e6 p& A  |! E' |- o3 T; H$ Da + b +c = 3
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( z( o0 o; Q0 S& O2 v9 C* va+b = 2# K2 n" b! w( l) G2 j2 h% _

# F. f/ z/ t& {; M: l3 Lthen c is 1
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, P" m1 l( M! y% @: ka = 2 - b
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$ ?- U- L8 w7 ^0 n4 D8 ?so 0 = 0 7 l+ n! _0 @& }: m$ ?; R1 S$ i& @; w

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
5 G0 w, ]# M& G冇答案ga....
. c) i( b, ]7 y2 V& P
7 l6 |3 z& v; W$ s( T( f. \* E2條equation solve 唔到3個unknown ga....

  l) S" f- c: c' o9 S2 |& E. {5 O5 Z4 e* b9 `0 x
此言差矣~5 m4 q/ u) }$ }2 \( }: d5 ]& x) C
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2條equation solve 唔到3個unknown ga! w, b9 ~% V8 H9 M/ a1 V; h5 e: W; R
還欠一個條件,就是3條equation都是linear independent(線性無關)的$ t( k2 f5 u: P2 }3 Z$ Q4 @

5 O2 D# x) d2 `- ?+ `簡單點說,多元一次方程就是線性方程的一個例子
3 r2 z" i# |- T! 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
5 B$ ]0 w; @+ ^( ?$ U( e% b" D, I
5 S# g+ J' @$ p! r) Y' J  w( f5 V0 @$ _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~)* g* {# I  n+ x. f, `$ s
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
5 k7 x# S* e  I有興趣就解解看
& |: _1 B, v/ N$ \" k7 O. l* V: p" T- x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:
) G7 R! u& g) q0 Q/ |4 z捉錯處就唔敢當- h; @5 G+ A  s1 o* H5 f" e
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
# X& Q& n4 R( t$ O5 u+ H反而適當地調節一下 , 咁會理性好多
, e1 `: Q+ i% S0 e就好似隻game 由12粒珠 加到13粒珠咁6 L6 d2 }% L  y$ B0 q
當''堂''好玩哂! X% \" h5 |8 Y+ f! n0 X, {

$ X8 F" |) W1 `5 e+ B$ p0 }p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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' D# F0 T, [. l% }) ?/ P" wp.s. 求''堂''字正寫...

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已是正寫吧