sakura310

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9 m1 r3 W3 b. f5 ~: o. X2008-01-18 00:25:24 | 阿感 | 2
( f- M$ l$ F8 J2008-01-18 00:24:20 | playbr2 | 2
7 S% w2 P; a0 A+ S: k' s, d, U5 {2008-01-18 00:22:02 | 但丁 | 25 y6 ?3 _+ [5 `
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:; j! v: N- O: s# S* q  R# f$ ]
Filename: DSC01158.JPG- k' d& [3 ~! N3 p
Datetime | Downloaded by | Counts- [" W3 k0 }5 o7 I4 o2 F) R3 a
2008-01-18 00:25:24 | 阿感 | 2
! }1 q8 r  H/ O! ~, N& v0 g4 L2008-01-18 00:24:20 | playbr2 | 2* z8 F- s2 E* z
2008-01-18 00:22:02 | 但丁 | 2( t- c' Z- O9 p0 v

, \& V0 b# a% s4 H點解大家都down兩次? XD

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( @/ s9 r& ?& O4 Y! M我第一次開睇左2秒就close 左
, ^7 I! f% m! }1 @& H6 V, t, v  w5 j之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* Y! @- V" G, I- q4 [' mFilename: DSC01158.JPG
" D* E  x" `" H3 S- c. L9 ADatetime | Downloaded by | Counts9 K6 ]0 g" j1 b
2008-01-18 00:25:24 | 阿感 | 2
# M: S8 k- X0 b2008-01-18 00:24:20 | playbr2 | 2! \, ^9 U: c6 M1 l; K
2008-01-18 00:22:02 | 但丁 | 21 T3 i, X# W) f
) p, D" ]' F8 r' p3 u( l
點解大家都down兩次? XD

6 S. J, A4 a3 z3 \, p  M& {
/ G/ l- g: G$ ]% q! O4 u* D快d捉我錯處. Z: [9 _+ D4 \, n! r) Q
話吾定我都打錯 + - 符號: o# D0 ~4 w' D  j5 q
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
4 J1 {6 I# `( i4 `. m( q不過,c=101n哥度(解除n係正整數的限制,只是整數)
1 f2 N- ?( O0 a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~)" G# X1 x; Y* j9 w# ?. u
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題8 {0 Q: P. `2 i* H+ B
但原先是不知答案,所以唔知有無失根. Z4 M1 U, [5 B2 O1 ~" h" w

; z% R- @; r5 X5 L有時見到題目都感到有點不爽& I) a% F& Y# l4 g$ P4 \1 K& M8 V& j
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. y4 @) y2 z$ F7 Q4 Y  |
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....; O0 q1 \) G, b9 D0 Q/ k% D

) g& C% D0 [: z; h( A. f2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
4 U7 l+ D; l( n2 j1 D冇答案ga....
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! k) w9 w- p. o2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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2 x, [& A$ f0 Zmake it simple   }! |+ ~$ o& t4 R* ?6 P

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3 [4 m# L7 S2 q+ u9 x" Qa + b +c = 33 B' E/ E+ e% N2 E
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a+b = 2
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7 {* v" }0 {# u1 Tthen c is 1
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9 f; e: o0 u" |6 H8 B* `0 @a = 2 - b % [2 a4 H% U( s

# k- g, u- X6 b& B, v0 cso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
3 m; {) k  B9 t% P; A# `( A2 c6 w冇答案ga....
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2條equation solve 唔到3個unknown ga....

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) u. n6 E* I$ r* @/ @此言差矣~/ F  F4 r( r( H1 M  k6 B
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2條equation solve 唔到3個unknown ga
  j6 V/ c8 m4 N還欠一個條件,就是3條equation都是linear independent(線性無關)的5 A. t0 o8 `* M( j5 a# r
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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/ \. _# `- k5 K0 V) P6 j5 v( 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+ v: ]  M; N9 n
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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~)5 [$ Q& I/ J& J# [3 P$ O$ B. W
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解4 \/ j  {. e# T2 Z
有興趣就解解看! c; j7 F! U9 L
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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0 i- A: u; h; e; K5 r# e$ S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:: P8 W* |& M- K& _5 [8 ~6 t( G
捉錯處就唔敢當$ _1 w& B2 o% F+ V7 K- `1 r5 {; c
不過,c=101n哥度(解...

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) f% _# S$ j+ }' ^9 J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$ i0 `2 t; h! U: _2 E; \反而適當地調節一下 , 咁會理性好多3 i0 |' E4 U; s0 Q
就好似隻game 由12粒珠 加到13粒珠咁
$ @5 ?% ?5 U$ ?4 ~5 Y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:+ J4 a& a. X& J7 m, F9 L# [

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# k7 w6 r; r) }1 ap.s. 求''堂''字正寫...

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已是正寫吧