sakura310

Filename: DSC01158.JPG0 D8 V1 [/ `4 a5 Y0 Q
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. h1 h+ @, d4 \# \9 `2008-01-18 00:25:24 | 阿感 | 2
5 F8 Z5 @, T" Z( p' T7 m/ R  H2008-01-18 00:24:20 | playbr2 | 2
/ L  |0 o+ I6 B$ X9 n: J- Q2008-01-18 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:- |" \$ {& j  ]' l
Filename: DSC01158.JPG9 O  x. _6 f: h4 v% F$ q
Datetime | Downloaded by | Counts. u8 M  c! U- T3 z. i
2008-01-18 00:25:24 | 阿感 | 2
: t- n8 \& ?1 U6 v- c0 S2008-01-18 00:24:20 | playbr2 | 2
6 h/ x6 h+ M  S6 X4 x1 g' A1 m2008-01-18 00:22:02 | 但丁 | 2& Y8 `, Z- m! p+ @# o1 j1 g3 t
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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
5 O" c8 @1 G, l6 z/ @之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
: X# b5 F9 v- aFilename: DSC01158.JPG
; F6 ?; C3 ^1 {; e. I; NDatetime | Downloaded by | Counts. v" W- `' Y6 e
2008-01-18 00:25:24 | 阿感 | 2. w5 `! @1 B6 d( x- N0 |# u
2008-01-18 00:24:20 | playbr2 | 25 n/ m0 @& O8 l. k6 U! p% p- ~
2008-01-18 00:22:02 | 但丁 | 2
  `5 q$ H/ k3 A7 p5 F6 }( B# u  p+ D8 q
點解大家都down兩次? XD

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  S- B" w, Q1 c" y  m/ n1 d" ?快d捉我錯處: J/ D8 x) F5 f$ F# s, `8 _
話吾定我都打錯 + - 符號/ P3 q7 O# [0 \% |6 e
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
* M8 t* p5 |' H' r" x) j. ]7 G不過,c=101n哥度(解除n係正整數的限制,只是整數)
7 p8 @3 ^5 o4 i' K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~)+ p2 \% N2 C4 N, e1 R
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題8 x0 I9 Q1 n" l7 L
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- i( x( |+ X) l
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' i: z: P8 W8 ^9 X+ R, \
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....
: c$ {3 j& `+ i5 t1 W/ G, j* M( F6 r8 O
2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:' L! F% n3 }9 Q8 r; c
冇答案ga..../ A$ x. U" Y0 x0 a1 ~

8 x0 G; Z! F, N$ G. z) T. f" u2條equation solve 唔到3個unknown ga....

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8 u0 e9 d3 w1 v. ?9 Q- G# Lagree $ K8 F6 \+ |3 A! |& }  N3 u

7 d" O: [8 n' \2 equations 2 unknows
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# j3 G2 j* x0 Y! C. O, pif 3 unknows there should be 3 equations * {+ J! q$ e1 u9 M

) N/ K- K& a! q8 K* n$ Vmake it simple 9 T6 u* B' r" I
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say % R6 j6 G. Z% C( L" J/ |, X& ^
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a + b +c = 3) ?2 `7 @, a# k* P) Z+ R

: I  @7 [  V$ @0 Ua+b = 2
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then c is 1 , P  K* g3 T! W" v! h5 p" W1 Q
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a = 2 - b
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2 _6 ?% h2 Q( L) g; V: ?; Oso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:) i8 j( c1 f) V" F/ h/ y4 L
冇答案ga....
; A  E' @( b, |; F1 M6 k+ w) j, M# E/ i9 @) A
2條equation solve 唔到3個unknown ga....

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  z& [0 H  V* K2 q0 {( \此言差矣~" ~6 K' @. }# I" m& Z7 K

8 ?. c% P+ z* z2條equation solve 唔到3個unknown ga
: o& k+ o$ ^6 \( v) U; P( w  t0 g還欠一個條件,就是3條equation都是linear independent(線性無關)的! ?4 K9 b" B. U* X% _  o& L

( C* v+ D) \' Q) S2 V5 d簡單點說,多元一次方程就是線性方程的一個例子4 H) u/ t% U. F" D" r8 D
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7 j) s9 u: t1 l% x$ ~5 U
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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~)
3 P" z1 M" o6 h. U  Z/ |例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解0 ]) h. h9 @+ v3 H5 j
有興趣就解解看
7 a# u5 ~) P: I* ~4 ]8 w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:$ R8 _/ \4 k5 D# u1 o2 V) J( a8 z
捉錯處就唔敢當
" e/ v/ r! @) h7 B. l+ o不過,c=101n哥度(解...

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7 Z# {; W5 H( K2 r" M* }" {- [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
4 ~! G. l( B: q4 p7 Z4 _6 P反而適當地調節一下 , 咁會理性好多
4 R3 {0 R, i& ^+ P就好似隻game 由12粒珠 加到13粒珠咁8 d# D: a, |3 s5 O4 h- a, \0 ~8 v
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:# X6 c2 M2 L( f& ]0 f/ U
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p.s. 求''堂''字正寫...

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已是正寫吧