sakura310

Filename: DSC01158.JPG
8 B0 u$ J( K/ {. H5 i* R5 }2 FDatetime | Downloaded by | Counts  j5 q3 l7 e4 N' h2 k# S
2008-01-18 00:25:24 | 阿感 | 2
! t- M3 k: ]0 u7 p  r* w6 e2008-01-18 00:24:20 | playbr2 | 2
( Y4 ~4 p8 h6 R$ f: @2008-01-18 00:22:02 | 但丁 | 2& }0 \7 H8 M1 S) C% i! g

" X) x1 ^3 }! F# D3 Z點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
5 ~7 U/ u4 j. ~" a/ d4 AFilename: DSC01158.JPG
- D8 T4 J' s/ {Datetime | Downloaded by | Counts( }5 n' _# g+ q2 n. C& G' n9 }! N
2008-01-18 00:25:24 | 阿感 | 2* \: Y/ \2 z8 Z- [9 a4 Z9 d( b
2008-01-18 00:24:20 | playbr2 | 2
0 d8 ~2 `- \& K2008-01-18 00:22:02 | 但丁 | 29 T" D; Q) G6 S- R  [) O
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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, F" p! i& u, ?
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:- \% b. h) q& x/ q  t
Filename: DSC01158.JPG
0 Z: H0 Y3 Z0 p0 Q3 {, ~  g# R- wDatetime | Downloaded by | Counts, \! p% d; s& u4 g
2008-01-18 00:25:24 | 阿感 | 2* W1 A  _& |# W; k8 U
2008-01-18 00:24:20 | playbr2 | 2
0 Y) @' a, {% r; k9 f& k5 Q+ V2008-01-18 00:22:02 | 但丁 | 2+ Q0 P- h/ a7 L  c+ D5 Q
+ f1 S0 d: O% A5 y
點解大家都down兩次? XD

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, p- m. s3 I! R快d捉我錯處3 x* w6 u; H" ?7 F
話吾定我都打錯 + - 符號5 T0 T. t: f. r9 x/ M, k2 K
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
$ A9 |8 b2 h4 [' c. `不過,c=101n哥度(解除n係正整數的限制,只是整數)9 b8 W3 M" N+ |1 e$ P$ Q' G3 d* n
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~)- j. ?0 K$ E5 j
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
( Q) ^2 ^8 N. z$ f% E但原先是不知答案,所以唔知有無失根7 N4 G- d  m& n) f5 a

) X, N6 f+ L% h- Z2 W3 p( @/ R1 s有時見到題目都感到有點不爽9 A& B$ k% P: x
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" E  p% h0 q& H: e. c
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:+ q  C& o. X1 U1 c9 p. |8 t' J
冇答案ga....
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8 v& ?* H7 W( z& E% Y2條equation solve 唔到3個unknown ga....

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agree : j+ p* U+ M; g
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2 equations 2 unknows
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; P; J' [  ~3 v: ]' o% Q  k2 j2 Rif 3 unknows there should be 3 equations
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make it simple + H% T6 n8 Q9 A9 F" ?: A

) |0 m/ o! q. ~4 V  @say
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a + b +c = 32 p" _+ [9 c: M9 K* x2 |8 A

. U) R6 @. Q0 l9 P+ N" g4 i! Va+b = 2
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* Z" a5 F. d& V6 S) E& c$ Z0 Gthen c is 1
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4 V! m% K7 F% Ea = 2 - b ( c. M* G7 @/ w$ y# j
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so 0 = 0 ( k% O# p6 Y: [0 O5 ~# D9 f

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
2 t# p* ~; }) p: C冇答案ga....* b- u3 U8 e3 U; R2 J* [$ \" b/ U

8 J) W# m3 f+ H& D) X# J( j3 }2條equation solve 唔到3個unknown ga....

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* y( ?( R2 a, R, E* i/ M此言差矣~* K3 g9 E4 v8 t) _7 S# _0 c
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2條equation solve 唔到3個unknown ga
5 R9 O% F) ~6 X$ b$ @  Z3 A還欠一個條件,就是3條equation都是linear independent(線性無關)的
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6 c8 v0 a! |' Y* S9 j簡單點說,多元一次方程就是線性方程的一個例子# r) ?) }1 a  I9 {* E5 y
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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. m$ Y6 {9 S; k  {+ T1 ?, o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~)
" M1 }: X) p% p1 x  U例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
9 u1 {9 c- g" l" G! p' s有興趣就解解看
7 K  @0 Y+ L3 n4 v不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:0 O' A  ~/ g* C0 K6 x

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0 m- I4 ~2 v2 K8 E" m$ N( Q2 B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:9 J& `+ N6 C% t( h
捉錯處就唔敢當. c2 W6 q/ R  S, x- Q- W( ^" o
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3 t5 t6 |) _$ K2 M! T3 }# w
反而適當地調節一下 , 咁會理性好多
6 u7 T: c( r* k$ E  x6 O3 {就好似隻game 由12粒珠 加到13粒珠咁
" L$ c+ S! w: U+ K4 E" \4 L當''堂''好玩哂
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0 U- A" T: }! l4 v+ B2 vp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:. D% O7 \; y; Y/ e. {, S! ]" G
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) \- Q+ o. J- ?4 zp.s. 求''堂''字正寫...

1 Q" a. \4 }  o9 T5 j已是正寫吧