sakura310

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2008-01-18 00:25:24 | 阿感 | 2& J' f, H; X7 K! ?4 P
2008-01-18 00:24:20 | playbr2 | 26 R" v+ |5 [8 ]3 Z$ j* Z; u
2008-01-18 00:22:02 | 但丁 | 2% F9 [+ Q. _0 }: D$ F! u& d
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:# v6 q$ g1 P! }
Filename: DSC01158.JPG
7 P* w' I" z( q/ ?3 }Datetime | Downloaded by | Counts; J6 z' L5 |  X, l
2008-01-18 00:25:24 | 阿感 | 2
2 ^- ^3 q$ ?$ ^/ \  M2008-01-18 00:24:20 | playbr2 | 2
  z3 L4 `  P0 K2 X2008-01-18 00:22:02 | 但丁 | 2
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" J' h; i3 g* f; I- q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2 w  w* L% H2 G  z: K- c5 l* {0 g
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
% G, F. H  f4 o8 R1 y" LFilename: DSC01158.JPG
. b6 F2 n# I: t& {4 D- ^6 nDatetime | Downloaded by | Counts1 S" E( ^8 G" w4 @
2008-01-18 00:25:24 | 阿感 | 2
3 v: p) P, C( u7 P" O. T- {/ ?3 L2008-01-18 00:24:20 | playbr2 | 2
7 ?. B4 f( y7 S+ `2008-01-18 00:22:02 | 但丁 | 2" C& c, a2 M( J

* \) ~8 }/ i* o- L: s" o. }" @點解大家都down兩次? XD

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; b" G: d8 d; C; B3 V% D" J快d捉我錯處6 s" r5 Q3 b6 E# F. X
話吾定我都打錯 + - 符號% U  ?% I+ n. s3 s% a/ B& S, p0 k$ L
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當; {' Y9 g( g: ~9 B
不過,c=101n哥度(解除n係正整數的限制,只是整數)) L4 U8 m1 U9 Q" d
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~), {6 C, H$ ?3 ?" h3 \$ R
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題0 ?4 K2 B5 x& ]( x% e
但原先是不知答案,所以唔知有無失根9 I! H( e: O  V0 G# M

) a7 e2 {5 o' z3 x0 r, A$ c) ^有時見到題目都感到有點不爽
0 Z$ M  o. e. ~; e8 H/ F, u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, Z. s. [7 H1 [0 I! s# e
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....
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# O5 x6 L8 d, O% ]/ Q: Q2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
0 L: e# N. p6 l7 g冇答案ga....
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. D; j; K0 w% p2條equation solve 唔到3個unknown ga....

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" T9 Y8 \$ X' H' j0 f: Nagree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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make it simple
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say
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a + b +c = 3
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a+b = 2
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then c is 1
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a = 2 - b : k; J) E! B6 ?8 ?/ f& k/ T
+ L( m6 O/ p- T! V( L0 V+ D
so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:$ C2 J; \9 v) ?" Z+ s/ {
冇答案ga....
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1 {! c+ |+ Z2 P( U- ]/ z2條equation solve 唔到3個unknown ga....

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此言差矣~% a2 z! a, U6 Q% `" X
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2條equation solve 唔到3個unknown ga
  F4 B8 M: f3 B+ `還欠一個條件,就是3條equation都是linear independent(線性無關)的! v6 W" S5 |, N, Z) v$ G
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簡單點說,多元一次方程就是線性方程的一個例子
2 j) o0 ?% {6 I6 c: n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# ?2 f" P. s! k; p; N' A& J5 |& R
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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~)- m+ ~2 \9 I! j. M" l5 z# O
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解% v6 z6 n) G) I# |0 Y/ _  w
有興趣就解解看
) V/ t( t6 x; z! Y  [' C不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:9 p$ @! r, U" W* ?  T  d0 p6 O

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9 s! h" H) Z* `' _7 i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:$ O1 r, R" k/ Z7 r7 _
捉錯處就唔敢當
/ G  _& N. o  S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
1 U5 n/ \9 X0 t反而適當地調節一下 , 咁會理性好多
( S% J% c; ^: \% r! W8 v就好似隻game 由12粒珠 加到13粒珠咁
# I' ~! d9 p( ~% {9 h9 {: S當''堂''好玩哂' s! y; |# @7 E$ _( H) x

( k5 m2 p: b9 t! F" ?3 g7 t+ [p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:% Y; c, g7 O" {  s5 r; m4 {

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* d. s- Q1 u2 O. ?9 P& x& hp.s. 求''堂''字正寫...

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已是正寫吧