sakura310

Filename: DSC01158.JPG
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" N* {0 l; D0 M2 c0 O% ~. K+ N/ Q2008-01-18 00:25:24 | 阿感 | 2
' \# ~; G) g  t3 U5 ?0 u  ^" y2008-01-18 00:24:20 | playbr2 | 2
! n3 Q# u9 r0 L* d; ~1 X2 ]2008-01-18 00:22:02 | 但丁 | 2! X9 U& B; J  T

( X( t0 p( Q, |& k' b* h2 ]* ^點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:# C$ u$ B/ U* b/ _( z8 r: E
Filename: DSC01158.JPG2 F: V9 M2 R) l3 y2 k  V1 R
Datetime | Downloaded by | Counts
8 V7 p" |0 F+ w7 J2008-01-18 00:25:24 | 阿感 | 2
: M1 O( |2 d  d" D; @& @) i2008-01-18 00:24:20 | playbr2 | 2
5 q- c5 V* I, n) _; d8 v" J2008-01-18 00:22:02 | 但丁 | 2
8 H; U( x- c+ T) i% `1 [! f+ w5 y* W9 a4 N1 S
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  H4 J5 r& ~6 D+ q$ ~' F
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
/ }9 D& k8 ?; C5 j$ [Filename: DSC01158.JPG2 T+ C1 F, l4 F9 Z6 }
Datetime | Downloaded by | Counts% q7 c( p$ k* q- c$ n9 J
2008-01-18 00:25:24 | 阿感 | 2
+ M4 @5 Q% M; K+ M7 r' \( L2008-01-18 00:24:20 | playbr2 | 2
& D. j8 l- y8 e, I2008-01-18 00:22:02 | 但丁 | 2
9 K: g% e4 S2 Z0 q+ m* q5 ^: n, B& F5 y+ @' f
點解大家都down兩次? XD

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快d捉我錯處
# A( M1 n$ v/ D: P' V/ T話吾定我都打錯 + - 符號
; I* f9 k  p6 H5 x  j/ W8 c" d8 p係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當- W/ @1 v" h  x' P
不過,c=101n哥度(解除n係正整數的限制,只是整數)8 d* s& H6 `( ~1 {* K% |' _0 n: 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~)8 B' n/ V& G& i" |) p
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
' x. D3 T1 d& o% H3 n2 `但原先是不知答案,所以唔知有無失根
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1 D) r( H% d5 b; ~6 L有時見到題目都感到有點不爽6 T" g' J$ \1 C8 l# A
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
3 W7 K/ [, o" L& j. 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....
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$ K0 A( a! n" j7 E  L) x- }# }8 U+ C2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
8 p2 c+ ^) O1 ]0 \. O) d: {6 H冇答案ga....
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2條equation solve 唔到3個unknown ga....

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) F6 |2 q5 U. I2 equations 2 unknows
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9 q" Q) h: \6 \4 hif 3 unknows there should be 3 equations
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! K4 F# m& k$ ~make it simple
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a + b +c = 3
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a+b = 2' d4 V2 x0 M) L" ]# {
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then c is 1 . t/ k. L$ v6 M6 c4 ^+ G+ k

3 I  c. w% r3 q$ za = 2 - b 0 x9 x. f% t: C, E3 _- j8 u
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so 0 = 0 + ~- u* X2 `: [  I$ g4 r

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:# i5 n. l4 x) @6 o7 B
冇答案ga....
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* i/ V# N6 ?& d+ A# Z% L7 V  S2條equation solve 唔到3個unknown ga....

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此言差矣~3 p; z8 [, p3 Y4 d) `4 f# F

5 g( @* `/ R% S; I' S2條equation solve 唔到3個unknown ga
2 [7 Q9 G2 V6 X9 u- A8 h  M1 m還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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
0 }( k3 j5 K3 a8 C- ^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+ E7 V0 S( I0 r, w
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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~)
. R7 I0 X0 g  G2 ?例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解4 }( e7 X$ z# Y" T, P* ]: `
有興趣就解解看
1 S2 F9 T% L& e( @% @$ v; X1 y, L不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ o! Q$ @) g+ d& T0 y) ~

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& Z" }9 G% e9 C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:: S# n  h* w1 N' C
捉錯處就唔敢當
% x; c7 [" G3 s+ y: Z7 W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
9 x9 s! t( w1 ]. ?! s反而適當地調節一下 , 咁會理性好多4 ]9 }0 [' N# Y% R; R( @
就好似隻game 由12粒珠 加到13粒珠咁
( E8 h' @2 b& U0 r! r' l9 u當''堂''好玩哂
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2 x' T3 S( S3 u9 Y: j, F4 C2 dp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:0 C' C4 w5 _$ L  Z) A

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p.s. 求''堂''字正寫...

4 p( L" l3 _3 P9 @% x1 C: h已是正寫吧