sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 28 w1 n) u) q% M; d4 G8 o! `5 s4 _' i; f# b
2008-01-18 00:24:20 | playbr2 | 2' f: I2 b1 Q6 R) c$ ^) k$ L
2008-01-18 00:22:02 | 但丁 | 2
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) e! V1 p) M) X( ], {' z6 v點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
- x6 d$ Z- e: b6 X7 BFilename: DSC01158.JPG
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* A. H; {9 y* u: T" v2 m1 m  q2008-01-18 00:25:24 | 阿感 | 2
3 y" K4 w( ^( ]7 j( W8 A3 a: P2008-01-18 00:24:20 | playbr2 | 24 C+ b$ l1 B: V; ~) g7 p3 K
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

; |9 u" Z% C9 W6 N2 t& S5 K) M, H# r! e/ b1 p; [' \
我第一次開睇左2秒就close 左2 X4 q4 c: _' x1 A' d
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
& K5 L2 o& A. V3 l# \Filename: DSC01158.JPG
  M9 N7 @2 J( d& v! E; v% M' Z  K- RDatetime | Downloaded by | Counts
7 v; W0 }/ U4 V3 C5 L$ R) @( z2008-01-18 00:25:24 | 阿感 | 2$ B3 [4 A" e2 w$ |* H/ I
2008-01-18 00:24:20 | playbr2 | 2
& J6 V5 Q  L3 @' A* I' k2008-01-18 00:22:02 | 但丁 | 2
7 J2 B; ~- B/ k1 g# ^5 T$ r& N8 A# ]8 \2 s
點解大家都down兩次? XD

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7 I9 Z  n9 E. P' P1 a% R. l+ q快d捉我錯處
0 B) \* O8 O% v+ ^7 i7 f5 \話吾定我都打錯 + - 符號
* E- c; U+ M6 `% V1 P9 G7 ?' Y係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當# T  _  a/ U7 Z6 j6 C0 w
不過,c=101n哥度(解除n係正整數的限制,只是整數)
4 B1 Y# k9 U' Z0 X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~)
: t( [7 k1 N- U: ?1 O% j知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
7 K  S& e0 Y: N" H' k但原先是不知答案,所以唔知有無失根* m$ ?6 J* X8 s- f6 Z& U8 G) b
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有時見到題目都感到有點不爽; v. X& w) S2 l, H# f3 E' 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' l! X: U. e+ i* a" `  J
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....) v( i2 {) @0 r; l! _& [
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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:
1 x- @. P- e6 o3 ~& Y$ m/ k0 D1 {. f冇答案ga....1 q  n2 q" w$ C/ ?9 q, z& j
! t2 Y+ d5 x5 u0 R
2條equation solve 唔到3個unknown ga....

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0 i) s. f# T, `$ K9 X! lagree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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make it simple & O& }( h2 Z, W

( p3 r( J0 P/ _" @) Esay
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a + b +c = 3
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% X5 |0 o7 O6 M' D% ]! Ma+b = 2' z  o' ?1 _. I3 W: K# ~! K
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then c is 1 9 m  Y' v6 v8 y9 i, [( \. n/ \( c% L9 z
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a = 2 - b
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:. H8 z0 u; _* t3 o+ E1 z# j3 Z
冇答案ga....
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3 I1 v! V& z! S" C' [  R2條equation solve 唔到3個unknown ga....

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此言差矣~& o! P& b/ b" n; @8 o( E4 F
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2條equation solve 唔到3個unknown ga
1 j5 [- C% l. R- K還欠一個條件,就是3條equation都是linear independent(線性無關)的" h/ X& U' Y& H: _# b

: t  V* k5 s  B% G簡單點說,多元一次方程就是線性方程的一個例子  A4 }3 i- t( H+ z- W
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( Y  ]# ~4 K) x5 p% ~

8 a' ?: Y5 z' a7 E$ \2 u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~)
/ G# L+ F5 X& i2 e例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解0 Z3 C9 D0 ]1 E1 y: s2 M: A* ^
有興趣就解解看
8 e2 ?) _0 }6 C5 w5 J, ?" _* `不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:) J, S  e, `3 v; b' j0 V& z+ D; W
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6 S( W# f: }; _7 Q3 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:5 ~5 ~" F3 C. W: i) m' d& {' ~
捉錯處就唔敢當% e$ l( A" ?: B* }# C2 u( h9 R& B  p
不過,c=101n哥度(解...

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* T0 a/ c( e. i% d0 m( u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8 ~2 g+ u  V! L9 f: J
反而適當地調節一下 , 咁會理性好多
1 ~4 H% U9 g( M- |就好似隻game 由12粒珠 加到13粒珠咁
7 t* O. B' W9 R  c3 K2 }; A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:
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p.s. 求''堂''字正寫...

9 L; m8 ?/ i" _+ ~% |2 d已是正寫吧