sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
5 K7 q( R3 K& G9 X, {+ Q2008-01-18 00:24:20 | playbr2 | 2
, s1 Z. M2 ^" x/ X' O# Y2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
. [; U1 {2 Z" b4 [# oFilename: DSC01158.JPG
1 v9 j8 S* q. dDatetime | Downloaded by | Counts, @& |( n8 b6 L% Z/ Y$ p3 W6 v+ Y$ g. F
2008-01-18 00:25:24 | 阿感 | 21 L/ T) r2 Y4 m" V( W
2008-01-18 00:24:20 | playbr2 | 20 l, a7 v8 f" h/ A' \  q6 Z
2008-01-18 00:22:02 | 但丁 | 2' s( h4 m* m2 U8 D
" N+ K1 _$ @( Y  S# u# u
點解大家都down兩次? XD

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, S5 k% x8 N6 R- ~我第一次開睇左2秒就close 左( ^# t8 t2 a' V/ Z% H
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:0 w1 @% [6 _4 E& e- \2 f
Filename: DSC01158.JPG. k; b# ~* r. A, n0 Z
Datetime | Downloaded by | Counts% }: f5 e; F* E& \7 K& t
2008-01-18 00:25:24 | 阿感 | 25 E  p# F* q: j" [; Z8 H
2008-01-18 00:24:20 | playbr2 | 2
. E  @1 w& `+ |' @4 a) I1 [* w2008-01-18 00:22:02 | 但丁 | 2
, {9 r) n. J3 s& O$ H" W: l, A& [
點解大家都down兩次? XD

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1 i, u, y1 S9 }" Q& f快d捉我錯處
/ X/ ?- S" W5 J& l' O" x, A4 T6 Y話吾定我都打錯 + - 符號
8 u7 \7 h2 B4 U2 `7 u9 R係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
" H+ [# r) @5 A" M: ?' k6 m. B不過,c=101n哥度(解除n係正整數的限制,只是整數)
1 O0 u& a, {8 w9 [' U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% U$ U' Y( ?: s6 x" D+ P知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題+ R% X% I1 I4 j+ I0 Z& C
但原先是不知答案,所以唔知有無失根' v: a1 U* e- n. G3 m6 F
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有時見到題目都感到有點不爽
* l$ l9 H3 ^) N" O! v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 j7 ~/ B' I6 k6 q2 I, N
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 }" U3 ?% G, M: C9 K& B4 D# k

8 }1 a' U7 m+ u, P- L3 k2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:2 m8 n' E6 w1 B5 J* t0 X
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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/ E: t  h" D. e5 s/ `9 Vagree
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3 q$ k% L; z+ i; Y7 O& H! b2 equations 2 unknows8 G( p6 U, @* h) Z6 M1 c

6 C4 A  Q9 {: k7 N) Xif 3 unknows there should be 3 equations - W1 F! t6 Q1 \& P3 }. T. @# S0 L

+ ~4 t' \" F3 N% \& |3 ^2 rmake it simple 1 C% T$ ^! W: n/ a; C! p
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say , I1 c' s/ K& ~7 v& ~* u) P( ^
( x+ |! Q2 N, c, D. o6 F+ U
a + b +c = 3
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: P2 P1 v( K0 V6 G; U7 F! va+b = 24 Z; j0 N, t) y+ b
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then c is 1 ( S2 ^2 S2 @/ o3 X; w" a

) S# K# N4 }& u1 {a = 2 - b
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) @  c2 K+ w5 F; s" bso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
. a7 T& U; R. \( Y+ ]) Z7 \% g. c冇答案ga....9 J' \7 {: ~* G
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2條equation solve 唔到3個unknown ga....

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9 k& d4 E# ^+ R4 `% e此言差矣~" b( L6 K( a( E; J$ \$ @( B+ _- i

: M* U  n3 Z2 c. u$ v1 l" ^2條equation solve 唔到3個unknown ga8 P  ~( p- c. o3 M! ?
還欠一個條件,就是3條equation都是linear independent(線性無關)的, j# r1 B4 k% Z. p5 C

( n& [" u4 [" q7 g簡單點說,多元一次方程就是線性方程的一個例子
' ?& X+ m' k8 P/ V+ F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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4 W; D/ T& R8 x6 C4 _$ z/ y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~)
9 `& W' z! z! g. ?( i, k! K0 a& f例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解7 ^4 v2 S* D' b3 I9 H" e
有興趣就解解看1 W* Q) C, {2 v2 L; Z
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:
. X0 Z! ]7 s1 X0 H# V$ h9 i捉錯處就唔敢當4 {% m. k2 o; Q
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+ a  ]6 l& d; o* a
反而適當地調節一下 , 咁會理性好多
0 t+ ?* J. S! f) s5 B9 e5 U" ^, `就好似隻game 由12粒珠 加到13粒珠咁. i7 |8 i0 S, `1 `) H: [8 B
當''堂''好玩哂
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" i! I9 k% K* T8 @p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:4 n3 ?! C0 V1 ]7 P

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" r+ e/ O% z: m& Rp.s. 求''堂''字正寫...

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已是正寫吧