sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
3 S1 p; ^. ~* o! P+ G( r2008-01-18 00:24:20 | playbr2 | 29 p' y% x' \$ G/ T6 P! \
2008-01-18 00:22:02 | 但丁 | 2* s& `& |, I' C6 E3 v9 s. d: S# u
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:7 @' z4 f  P% H' V' C3 ~
Filename: DSC01158.JPG
( }+ n. f( e0 s* IDatetime | Downloaded by | Counts
& R- Q8 e. O* D0 ~  ~( S2008-01-18 00:25:24 | 阿感 | 2
7 n6 i1 w0 k4 n8 P" c. c4 I3 O- y3 W2008-01-18 00:24:20 | playbr2 | 2
" g3 I/ H% ]* R8 }+ A2008-01-18 00:22:02 | 但丁 | 2
8 I  @& g$ A" y. W9 w# m; H- v' a( I1 c4 `5 g$ M) [* v
點解大家都down兩次? XD

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: a' j$ F/ }2 b6 x2 ?
我第一次開睇左2秒就close 左
( O5 Z+ A! P( ]0 k( u之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, n4 k  E& s5 D6 v. U" K
Filename: DSC01158.JPG# ?) F2 i- s& E% C
Datetime | Downloaded by | Counts
2 q  M9 Z2 f) }& m7 e; h5 L3 L% V2008-01-18 00:25:24 | 阿感 | 2$ K' O& j/ g) K% X( V: X
2008-01-18 00:24:20 | playbr2 | 2
' j# q7 {% I( v1 R2008-01-18 00:22:02 | 但丁 | 2/ ]0 ^+ [7 _- ~8 _+ g* Y: p3 Q  @

) R4 @" U$ L% P' S% L點解大家都down兩次? XD

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# J2 k4 l' U1 b2 B) a9 C快d捉我錯處
. }* |/ Y2 k: A0 _9 `* F8 i, d話吾定我都打錯 + - 符號1 f4 ?# u4 R5 B& I  y9 L! N% s
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
* O- q1 D3 U: Q9 d' |! P, T0 T% I2 b# Q不過,c=101n哥度(解除n係正整數的限制,只是整數)# F) P& a5 W+ z5 S, @7 m
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~); @  d3 h" ]4 G4 b
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
3 r- E6 U# d1 s但原先是不知答案,所以唔知有無失根' r% x* l) Q4 m% g9 G8 V7 ~$ b" z
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有時見到題目都感到有點不爽$ z+ @' ^5 y+ |: n4 N
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$ f+ j" m. E3 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....2 A3 Q+ K* R- ]
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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:
: |* i! x" o* r( q5 {& X6 c& ]冇答案ga..... }7 Z+ d- A1 o$ Q5 }

/ h- B" d/ c4 J/ ?1 m+ ], z! }7 {2 G2條equation solve 唔到3個unknown ga....

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agree 2 r. w! Y. A/ N# @

" w( g( [& B& U& y2 equations 2 unknows
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if 3 unknows there should be 3 equations
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: y% O# `5 L0 p" O& smake it simple
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say
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a + b +c = 3
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a+b = 2
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then c is 1
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a = 2 - b 0 A9 C0 o1 I* a( `: M+ b* L

0 Z' P9 ]( {7 X5 V% xso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:3 n+ P  Q5 m- \1 Z. [3 \
冇答案ga....
7 ?+ ^2 x2 f- G  M6 a
3 o, X' R) K# P; ~/ K) j2條equation solve 唔到3個unknown ga....

7 h) B( E9 w; @- Y6 n, S1 P% J2 `1 Q" [, a: a  [, u& f
此言差矣~; H9 K$ R! a0 t0 F

& A$ d7 w2 X5 d  L: k2條equation solve 唔到3個unknown ga
2 `1 }5 `! u& u: |還欠一個條件,就是3條equation都是linear independent(線性無關)的
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1 w  J2 h; l! W, p( F9 d簡單點說,多元一次方程就是線性方程的一個例子, o8 B  F, D5 L4 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; {! z4 e. B- x, ^5 k

( K% k% Y- O4 Y" r0 a4 J* d. W% a8 _8 m5 Q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~)
2 _! w1 [; c; ~# ^5 y例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解6 {* V+ t# I$ S6 D1 h
有興趣就解解看7 R4 ]' P! k3 y" f( y
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:/ b3 d+ D/ X4 r- j
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, j$ g8 i" N1 m1 h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:
+ R5 t9 @, g, ^+ X捉錯處就唔敢當
7 }8 _4 r0 v! ^; }5 ]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" S- k2 j; \% m  V9 K
反而適當地調節一下 , 咁會理性好多( u7 X& L' n7 T3 T
就好似隻game 由12粒珠 加到13粒珠咁
, v8 a2 C# o( M) t! v( N6 X當''堂''好玩哂
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+ l4 g2 `* x9 f4 R+ tp.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...

. Z7 ]- L) c  O& b. v* I已是正寫吧