sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 24 S( g6 v% H! O
2008-01-18 00:24:20 | playbr2 | 2
8 ^; z% H4 x  x& u4 H2008-01-18 00:22:02 | 但丁 | 2
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* ~- C3 M- c( h點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
3 j4 N$ I0 a. P  P. U$ aFilename: DSC01158.JPG
2 G7 \" k* x& w# O5 T1 JDatetime | Downloaded by | Counts8 ?! i- j1 z( s" H
2008-01-18 00:25:24 | 阿感 | 2
8 c$ J  \7 _5 a* ~/ d: t* [2008-01-18 00:24:20 | playbr2 | 2
; g1 K% c) [- g- O$ N2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

' I5 _' d" I3 |! m6 C8 q$ q4 O, x/ F/ N2 {' s, f; @% L
我第一次開睇左2秒就close 左
2 T" N6 i! N& j/ e8 h0 a" ?之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
# Q; p8 V8 N+ x! a4 z, r* m* s- T) f- ^Filename: DSC01158.JPG6 Q: h  b' q/ f( {6 k' N
Datetime | Downloaded by | Counts
- s# u5 g; ]1 o2008-01-18 00:25:24 | 阿感 | 2' i$ R. K' e# s: |
2008-01-18 00:24:20 | playbr2 | 2  {; h8 P7 `" ]( y5 s
2008-01-18 00:22:02 | 但丁 | 2& A/ b* x! t" m& X6 m+ q) _8 m( P

1 u( L, E& D8 [4 \點解大家都down兩次? XD

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) P) f( Y1 a8 u% ^快d捉我錯處
4 y7 E/ y, q8 H話吾定我都打錯 + - 符號% ~3 Z& ?! |, i. N& w
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
6 X2 S8 a& l' T1 d9 z2 I8 y不過,c=101n哥度(解除n係正整數的限制,只是整數)
9 B7 [: ]) u4 \; D: p1 e' }& ~! F8 v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~)+ V( _% s% [8 h  v) D
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
2 t2 l" ]" j6 X* n+ _但原先是不知答案,所以唔知有無失根1 y/ A% `$ ~/ a5 |

9 I& i) d3 r7 H有時見到題目都感到有點不爽
: e" X! V8 K4 D- e% X  e' {0 f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* ~9 L# Y8 o4 H
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....
( {( V. R4 p% k& W+ G! _; `4 ]) K' \7 ]& f. w# j7 \
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:2 P7 I: n& a* A# ^* N
冇答案ga....4 r$ b. a4 ^+ f0 l9 E' s+ b( O
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2條equation solve 唔到3個unknown ga....

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! f: X& ]& A9 y- t/ G8 F$ q. l# |agree ; n+ Y" V9 e+ Y9 N! ]% Y! r
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2 equations 2 unknows
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1 s6 z3 @, V* T: g' _if 3 unknows there should be 3 equations , K1 l" _& ]# ~/ P7 q
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make it simple 3 U$ N" S7 l: D4 _1 N! A" d

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7 c  K  T8 z/ u9 r8 Ja + b +c = 3
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a+b = 2" h2 R" p- m- n' B0 c

& D/ z8 H5 Y' L/ n) h+ r! H6 }# uthen c is 1 ' w- `4 _- ]+ w
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a = 2 - b
+ \7 z- c1 x1 `. z& I
! V6 A4 a9 k; @: D2 Qso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' P/ T6 k8 q9 Y8 z7 Y冇答案ga....0 p5 V- y: ?* k+ i) G$ N! ^. t

  t: l  q. U/ K* l% o2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
9 e5 _; J3 Y, T+ L* _還欠一個條件,就是3條equation都是linear independent(線性無關)的
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# l; x. Y  N& H簡單點說,多元一次方程就是線性方程的一個例子
3 l8 j; o/ g0 D# L, ?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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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~)
& P# ~" w) R2 j9 Q# n# ~/ q# W例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解$ f9 i5 o0 W* A- ~+ k7 D
有興趣就解解看
# m: ]# ?5 {( f3 W1 |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:2 x& F" p0 x! r8 t6 M2 @' s* [. o
捉錯處就唔敢當  K$ @1 t! Z3 a! O) C$ K/ u
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3 t+ Y0 z9 d  z
反而適當地調節一下 , 咁會理性好多
2 E: m7 k. r# W% x$ ?; j就好似隻game 由12粒珠 加到13粒珠咁
6 N# v3 H+ w' W3 E+ M8 }/ J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:
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p.s. 求''堂''字正寫...

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已是正寫吧