sakura310

Filename: DSC01158.JPG7 l" P8 N* E- [  ~
Datetime | Downloaded by | Counts; |! m7 s& B' }: |: R
2008-01-18 00:25:24 | 阿感 | 2
' [6 P  c9 w' C" v2008-01-18 00:24:20 | playbr2 | 23 c4 l, K) X3 \; R. j$ f
2008-01-18 00:22:02 | 但丁 | 2
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( A* o, x! Q' B3 }" L點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
% C- Q( K) ]$ y- ~2 k$ ^* Q' t$ c8 ZFilename: DSC01158.JPG
+ R. j6 d: q; S; P+ E4 ~8 jDatetime | Downloaded by | Counts
' B% S  K6 P; b6 X! w% n2008-01-18 00:25:24 | 阿感 | 2
! N/ z+ }' p9 c2008-01-18 00:24:20 | playbr2 | 2
/ u+ N- g- }! \( h1 [7 i' z2008-01-18 00:22:02 | 但丁 | 2
; [8 k5 w9 \, `9 [' S3 ~& R. L% d% \5 _5 H  V7 n! o
點解大家都down兩次? XD

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4 D( @5 p5 R3 I" O3 M% @$ j我第一次開睇左2秒就close 左
# j( y- U$ N9 c% U% |) X% k& G之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, y/ m( y! C- c- l1 y" G
Filename: DSC01158.JPG
2 b! N6 v& e7 E5 }* qDatetime | Downloaded by | Counts
$ H+ Y( F7 o6 X0 T" M2008-01-18 00:25:24 | 阿感 | 22 ]" \# B! X- k  p
2008-01-18 00:24:20 | playbr2 | 2
9 j  g6 ?# T: v- s' `) u% E2008-01-18 00:22:02 | 但丁 | 2, F& i* v- u5 T# \5 N; P$ e
0 w7 S4 a, _' t9 o: Y/ K2 L
點解大家都down兩次? XD

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快d捉我錯處. s& O- y# {8 c% L" ~% Y* g
話吾定我都打錯 + - 符號0 V4 W& t, p( g) ^# \) a8 P
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當0 G: N3 T. K! h: p  i$ `+ S
不過,c=101n哥度(解除n係正整數的限制,只是整數)
5 A/ D2 G- B0 ?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~)
5 q5 C2 P  \7 R* s" V% H  ]3 }知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題$ {) c; A) k) u( l8 i# I" s" ?
但原先是不知答案,所以唔知有無失根
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1 K9 d' ~8 B, k2 c3 X9 a$ p& [# p有時見到題目都感到有點不爽" j3 R1 [& v" c2 `) |
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! ^- m: m1 q" q( Z* R0 L7 a
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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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
7 g+ v( P6 Z0 q3 h& l% s/ p冇答案ga....
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& x+ q; u0 T# l- C4 H2條equation solve 唔到3個unknown ga....

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agree - e3 t- p8 U6 R# Y" l( P! v; L

" P8 `* a7 L/ g2 equations 2 unknows/ Q! \* `6 r& x+ i" m* M6 J) W. M

( s0 [( a0 O) E: ]- Gif 3 unknows there should be 3 equations 5 m+ \1 Y4 {& S. s  |+ O: k! |4 X
1 f- [& x. S9 s! y8 x+ F. @8 i1 g
make it simple * p# V# P, ~9 N; q' V% ?

6 C; K4 v' \% p/ L" lsay
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1 \- n+ i- @7 ^' T' ~a + b +c = 34 B6 D" f0 G- Z0 j4 p4 h. E1 X

& A- v5 K7 X/ t3 X) ua+b = 2& h2 [- z% Q  _$ ]; t( c4 g+ @$ I
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then c is 1 3 B# V- ~' W7 ~8 z" G
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a = 2 - b
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+ D' U) |+ h5 e, G1 L% N. Iso 0 = 0 6 j3 S1 ^- O: n) ^1 B( o
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:% X$ t6 n! {. C2 i
冇答案ga....7 d% w7 h- i9 H
1 g9 r% z  L- T2 c; A# k, Y5 n3 ]" V
2條equation solve 唔到3個unknown ga....

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# z- y, s7 w0 S1 \* }此言差矣~. \& ^* W7 I6 [4 ]

; Z6 Z$ X* S( ^; D2條equation solve 唔到3個unknown ga
! n; n0 s4 @; W! Q/ Y3 V% Z6 a還欠一個條件,就是3條equation都是linear independent(線性無關)的! E4 o0 |. Y0 D: N
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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9 s8 k! Z* N$ j; w- S
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~). o9 X$ m. b6 f: N9 J/ q1 K
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解0 n( b. U! [- s# T& A: R
有興趣就解解看9 c$ N4 E& d' ], n; R
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:3 P- w" w" @: K. p1 g
捉錯處就唔敢當* T) p0 Y8 _3 ^: L* x. V
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5 D, `* |( M( p$ S) f3 L
反而適當地調節一下 , 咁會理性好多2 W; p3 w4 o( |3 e2 b0 U
就好似隻game 由12粒珠 加到13粒珠咁
  ~' }! C$ e9 p3 W6 N當''堂''好玩哂' A. T/ D+ v! V% B! o  t$ w

# ~& H9 g" i. j$ B' `p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:2 T* b" l' J; O9 z5 r) ~
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p.s. 求''堂''字正寫...

5 }: z( p  v+ i* |+ v已是正寫吧