sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
; y1 Q! }) X" X) }0 H2008-01-18 00:24:20 | playbr2 | 20 f4 V1 I+ C: c& f1 E
2008-01-18 00:22:02 | 但丁 | 2; `$ L9 X( V/ F* _% F- O
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
6 Q3 ~4 d9 Q% J8 nFilename: DSC01158.JPG' t" V) o6 J; C  \" `( N: G
Datetime | Downloaded by | Counts5 B' ]; Y- e! w" e  q  Q
2008-01-18 00:25:24 | 阿感 | 2- w" \$ m: j5 F8 \- Y
2008-01-18 00:24:20 | playbr2 | 2
3 J: e+ h2 L" l3 }2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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我第一次開睇左2秒就close 左
( v0 j( h+ f4 S4 d. }之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
8 l8 V# [& @5 bFilename: DSC01158.JPG+ l% j0 B" l0 t( {2 D" A7 `
Datetime | Downloaded by | Counts
. N! C5 R+ i: _0 Z3 B4 R2008-01-18 00:25:24 | 阿感 | 2# H4 S. @. W2 E( u, n0 v6 O* {/ h
2008-01-18 00:24:20 | playbr2 | 2
2 A' {2 n! S( W* m  |5 O2008-01-18 00:22:02 | 但丁 | 2/ m6 z0 M2 O# n+ k1 C$ p/ g- w

& l# u0 g0 n% Q點解大家都down兩次? XD

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: H+ Z& C3 k2 A8 _, Y5 o快d捉我錯處
; T$ T9 k. b- T2 U話吾定我都打錯 + - 符號2 z" M7 N) A; X, M! \
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當8 H* {/ z& v4 L6 v4 B
不過,c=101n哥度(解除n係正整數的限制,只是整數); z* S+ @$ t; m
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~)8 E$ _5 D; W6 S7 |/ [9 Z& }
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
+ c; `9 c( U5 `6 c& ]" y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
% P- r, @1 g, K  d0 X; ]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2 M+ X8 f9 l# R! J* Z
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....7 ^/ e2 z) y/ |. I# q
0 c# N+ l$ E" C4 [' s
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
) `- d$ o2 c" v' U! z7 s1 F$ f冇答案ga....  I$ H) T7 P) a7 p# A8 p* d

5 s" a4 m6 E6 M5 V$ O2條equation solve 唔到3個unknown ga....

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/ T$ |2 |! a7 W+ S5 Sagree
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; ~& R/ q; E6 ^' f  Y4 S2 equations 2 unknows, c0 d9 K  r. O& k; V
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if 3 unknows there should be 3 equations & [9 Q+ O1 H3 ~0 U( G) a
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make it simple
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" s) T) s0 u& }5 x8 R5 f3 _' c/ P# Gsay
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a + b +c = 3
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+ j; I  f3 B1 T' j" Sa+b = 2( M% L/ A3 T0 ^/ C
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then c is 1 : D3 a+ E# r7 w$ p6 x5 [, [

+ r9 T5 O1 C3 M+ d7 D& Ha = 2 - b : q/ M8 E( J' L: S- g/ P7 J3 W6 j
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
7 E/ b( ?0 v4 r/ o# b冇答案ga....
7 D1 Q6 H' K+ n2 }& b. r7 `0 y* v3 v- Z. m
2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga
: x$ E: t& v4 r, E1 |# J) @還欠一個條件,就是3條equation都是linear independent(線性無關)的
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# N8 l7 h. g9 d/ G  y- h  Z簡單點說,多元一次方程就是線性方程的一個例子
$ Y; a9 c1 N7 b& z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  v/ u7 f7 M: O  o* J  \

. u) a3 J1 T# G0 \4 I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% Q- ~( e- i例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解9 U" D( U" N; |( ^0 D6 o
有興趣就解解看
! q3 c  d3 U& l2 I; u$ n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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* H1 m% z* v  K  \2 w/ H* x% Z1 M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:
+ S4 \- l/ r1 }捉錯處就唔敢當
. ~+ _( i3 P& n) E% F+ U. v5 T3 |4 A( l# L不過,c=101n哥度(解...

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1 e: v2 k4 t# a, j, L8 I, ^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  \& O; u) W8 Z" D2 _* X
反而適當地調節一下 , 咁會理性好多
8 M9 c% P9 R& x% X就好似隻game 由12粒珠 加到13粒珠咁
! H- N9 v! [8 f: s當''堂''好玩哂
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:* E+ T% S* h; Y. f5 @6 v: u8 e3 W* z
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p.s. 求''堂''字正寫...

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已是正寫吧