sakura310

Filename: DSC01158.JPG
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  Y8 |3 V! X4 `" ~2008-01-18 00:25:24 | 阿感 | 2. M) j- v/ J9 W# R
2008-01-18 00:24:20 | playbr2 | 2* v# o2 h" R4 |9 C: A
2008-01-18 00:22:02 | 但丁 | 2
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& g; S( X. E7 k) |點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:! E; m+ ?. q! |6 D. c. u0 s' y: h
Filename: DSC01158.JPG* g+ F* I+ @5 p: y
Datetime | Downloaded by | Counts- a" X# i1 n* s& v# w
2008-01-18 00:25:24 | 阿感 | 2
9 I/ d9 q' j2 z2008-01-18 00:24:20 | playbr2 | 22 H9 h2 ^+ f( |0 y
2008-01-18 00:22:02 | 但丁 | 2
9 @9 @4 V' f) w: ]8 s+ ~8 U3 z" Z" ~* m# P' t! q% J( X
點解大家都down兩次? XD

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& k! M) r) q4 b, B2 K我第一次開睇左2秒就close 左
( I# w# P* t* x0 K3 m% ?9 A0 G之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:  h  G; T9 w" \6 d; e
Filename: DSC01158.JPG. Q- e% S) Q1 q5 i- l" ~0 A
Datetime | Downloaded by | Counts4 ~; i2 j3 A- i; Y5 s* A0 P3 m* \
2008-01-18 00:25:24 | 阿感 | 2  P7 M0 p+ C# R, O& `$ x
2008-01-18 00:24:20 | playbr2 | 2
# c( D1 T$ Q/ q# m7 }2008-01-18 00:22:02 | 但丁 | 23 z: O  p3 T7 r' b

$ i! i/ {6 P; f4 Z) z點解大家都down兩次? XD

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  k9 V( t% _$ k: V7 m5 |+ I快d捉我錯處
+ H( j$ N( m( d7 `* u& [' Q! S" b話吾定我都打錯 + - 符號
: a! r8 H4 i4 S+ V5 c9 v, B) N; k7 F係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當7 l! c6 f, Q6 A8 |9 e
不過,c=101n哥度(解除n係正整數的限制,只是整數)
1 o8 d' M- T9 N3 Y' z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~)
% ], x( W( `$ r* L8 D; D* ]知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
* C- T" E/ v' i% {$ m  e4 c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
  K6 A$ A4 L) t% x; N0 b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
+ D; ?, S7 F2 D% l  O: \* q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....5 W" t. z8 @6 K8 X) t

+ i: S$ D' Q5 v9 M" R2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
5 X+ B0 r: M3 z5 `6 m冇答案ga....
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6 M* w) ^" q4 Z2條equation solve 唔到3個unknown ga....

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% I6 M3 ]8 E# E# L8 s4 V0 dagree ! V. J5 ~; F: z" X# O" n9 y
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2 equations 2 unknows& T) i# C- I' Q- `  Q; I% d

# ^- |1 p& o7 d3 j! Eif 3 unknows there should be 3 equations
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make it simple 5 E9 }; ^; L' v6 r; k7 O

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a + b +c = 3) ^5 i  t. a3 D9 G

# z0 t6 g! k( [0 ]a+b = 2& B) y5 L0 ?. h8 F  G/ R

& V3 h( G( ]; z4 ~% c/ M' [( X( Fthen c is 1
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: o2 q  l( n6 j5 Oa = 2 - b
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so 0 = 0 * o5 W  ]& y. p" E

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:* u4 k: k& Z2 W; o
冇答案ga....
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2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
# V8 F: B) p% W  [3 @還欠一個條件,就是3條equation都是linear independent(線性無關)的
5 }' x  {4 L' r' M+ u: x+ a
$ N+ w, }$ ]) }" t  m  B$ J簡單點說,多元一次方程就是線性方程的一個例子# Y* Z7 O5 k  _
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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3 |" L% C* l% U% K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~)- v8 A9 u  G9 }/ E+ c0 t; d
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
" u. W' g4 [/ F" D. y, A9 m有興趣就解解看7 Q/ C9 @7 ^' C
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:" w5 g5 T" m* E5 E- R7 H* B/ ?- l

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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:
  ^' V7 M4 B1 G) {捉錯處就唔敢當
( x( P5 M, I, g3 g4 z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
" l" F$ f# D# m反而適當地調節一下 , 咁會理性好多
- V1 b# \4 S/ h' @5 k0 O就好似隻game 由12粒珠 加到13粒珠咁3 ]  b6 k  X9 P7 a' a) ]
當''堂''好玩哂1 a+ U) H8 w, L4 x. a; E9 n$ `7 }
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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...

7 }' L( Z" l2 T& n) R+ l2 n( q已是正寫吧