sakura310

Filename: DSC01158.JPG
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! u; ^( H1 f/ O8 S2008-01-18 00:25:24 | 阿感 | 25 o+ r% U# }' h3 }6 @
2008-01-18 00:24:20 | playbr2 | 2
' T/ |8 I/ V% G' V& b6 Y7 W2008-01-18 00:22:02 | 但丁 | 26 P/ ?" A/ j! Z" ^4 z6 B6 Y
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
5 w; g# @6 d9 V5 ?Filename: DSC01158.JPG
4 y: s3 K: n. n% q8 ]! BDatetime | Downloaded by | Counts; T; l% i; m1 F8 ?
2008-01-18 00:25:24 | 阿感 | 2
4 N. ~- N) q: v3 X. x  A2008-01-18 00:24:20 | playbr2 | 22 w% c% ^; v+ @7 _
2008-01-18 00:22:02 | 但丁 | 26 H3 B* Z' M3 `) J) W5 T! Y
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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( I. {4 l6 V  U) b# d
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:, a7 {2 e4 d4 [% |
Filename: DSC01158.JPG" {$ w% R  E: o7 s6 ]
Datetime | Downloaded by | Counts
. o( ?0 G4 e5 O+ i" C2008-01-18 00:25:24 | 阿感 | 20 n8 A) Q7 [6 _- \( s" n
2008-01-18 00:24:20 | playbr2 | 2
4 i9 k1 Z6 M: ~0 I2008-01-18 00:22:02 | 但丁 | 2
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6 a2 m4 B5 K# V9 Q$ g, I) x點解大家都down兩次? XD

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快d捉我錯處
, Z* J! x$ J3 {$ K: H7 G話吾定我都打錯 + - 符號
- P- W) j7 T- f. J$ R. a係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
+ D7 _, ?2 F$ H' b不過,c=101n哥度(解除n係正整數的限制,只是整數). ?# f7 r: T4 ~4 ^3 ]" O
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~)
; B& a1 X4 `! x3 Q5 c知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題7 ?9 l7 b$ P1 j2 A! }
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
7 E/ H6 W6 z- D9 T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
# ]* ^& W2 T0 C7 D* ]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:
7 m/ v  B0 X% [3 y: {8 K8 o* _0 _冇答案ga....7 ]# s6 y$ s+ {; A1 J8 k; Y
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2條equation solve 唔到3個unknown ga....

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' W+ `3 y6 u% z6 u- @% y$ ragree
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: `5 ~& d& w. `) ~" I3 e9 V% n2 equations 2 unknows( K, Q( ]5 ]8 t
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if 3 unknows there should be 3 equations 6 N0 q3 S# f$ ^0 B
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make it simple 8 N: C7 E; u! l2 u) @, @

7 X2 b; y/ E! Q! `9 K1 l& Z7 [, B' rsay
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a + b +c = 3, M6 B' r/ {, J9 A& m0 X

% s  y' ^+ z0 j+ h  Ua+b = 2
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then c is 1
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+ J) a8 B4 f0 A/ m9 A, ^a = 2 - b 8 ]% L( ~5 j5 a6 g  j: T  u* `; @
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so 0 = 0 5 e* r+ ^, ^2 k/ }/ |; [
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
: M1 L7 j! J; ]2 H* h冇答案ga....
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5 B1 s( w) ~" r0 a0 Q& P( H2條equation solve 唔到3個unknown ga....

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* T8 R9 u" h% d$ w1 M, T: F此言差矣~* w1 E2 m% _6 m. ?8 i  I

4 W+ Y; g3 E; W5 `7 Q2條equation solve 唔到3個unknown ga2 y& P" ?$ l$ o% n" ^/ @# ~
還欠一個條件,就是3條equation都是linear independent(線性無關)的' l# a8 k- K' p
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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
# |; i- d$ \4 G6 X- U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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- D; `/ d( A0 W( ^* ^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~)6 v) d- E' x- K0 b4 i
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解+ @5 z3 S/ \8 }) w# f! n6 I! `
有興趣就解解看" N) c3 [, A( |, J! a4 q, r
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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7 H) ]% \: a/ U) x% R* ]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:( _  Z3 a# ~1 o
捉錯處就唔敢當& D9 K3 g2 G! a+ L/ O5 R; U
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 G2 P) g: s8 U/ M9 J. E
反而適當地調節一下 , 咁會理性好多+ M9 `/ U( p, t  T
就好似隻game 由12粒珠 加到13粒珠咁$ k" S4 P, n: U# V7 {7 ?/ F7 v4 {
當''堂''好玩哂0 k; G. w( `  P
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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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5 H+ ~- L6 E) rp.s. 求''堂''字正寫...

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已是正寫吧