sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
* E! t( L+ I4 I9 a0 ]$ L2008-01-18 00:24:20 | playbr2 | 2
$ V( ?# a: R$ [9 d: h* o! K) c, L2008-01-18 00:22:02 | 但丁 | 2' R/ y4 e3 ?2 G$ N( b* v
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:! B" ~( u2 ]+ m  P* ?8 T
Filename: DSC01158.JPG: Z; T4 c& `2 r
Datetime | Downloaded by | Counts: F. q" @1 v  V7 ^" ?# |7 N
2008-01-18 00:25:24 | 阿感 | 28 q) s) d+ r0 w( ~0 f3 L
2008-01-18 00:24:20 | playbr2 | 2( j, Q. e/ P* w& G' y' J' j
2008-01-18 00:22:02 | 但丁 | 2+ J% a0 N- _6 S: f3 j
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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! a# T; U: e# S8 r
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( _+ p  Y4 U. a: p+ |! P
Filename: DSC01158.JPG/ j2 O4 O6 `3 ?4 F! N
Datetime | Downloaded by | Counts
  v' ?: h$ l: E1 M; W: C2008-01-18 00:25:24 | 阿感 | 2
1 B6 B2 |0 ^" f/ P/ v2008-01-18 00:24:20 | playbr2 | 25 E2 ~2 b4 C7 J# H+ J/ O6 e
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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快d捉我錯處' d* ]' t3 E3 H# }1 K7 M
話吾定我都打錯 + - 符號: M) x* P0 n5 [( {
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
8 f0 R5 D7 W, \8 V0 i, |+ a: R% Z不過,c=101n哥度(解除n係正整數的限制,只是整數)
% w. n" v/ Z% ]% ^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~)
9 D# K; ~8 _9 v9 L知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
+ M! v% ]  o( v. q但原先是不知答案,所以唔知有無失根  e$ v9 {/ V* z8 e

: W2 P0 l9 `& J8 [2 H- S有時見到題目都感到有點不爽
. @- @0 p. T1 E- d& ^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. Q8 @" B- e! L) g3 L- T! m9 u+ s* 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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& t' V- `8 z) ^5 p8 E9 W: V4 J2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:' q3 N1 O  n0 q
冇答案ga....7 A- D' H' T& P9 t/ o

6 z: X1 |' B3 P- k9 q4 a2條equation solve 唔到3個unknown ga....

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4 K: v( Z9 r1 G- |  c9 N$ q. Z, I' D! ?agree
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) r6 L: Q& C8 q2 w* }2 equations 2 unknows
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. _1 \, P$ r/ ?0 y3 P1 Sif 3 unknows there should be 3 equations
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make it simple
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a + b +c = 3
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a+b = 27 D9 [9 z( V1 `$ F* S. J& b, ?& ]7 F' Z
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then c is 1
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a = 2 - b
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6 [3 ]! D4 e. ]8 t5 z8 i# Y- o8 j2 tso 0 = 0 6 [  J* @$ a+ P- o: ~  e& z. V  j

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:. f; t" F( }) y7 V* R* N2 F
冇答案ga....
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8 \' |! F' d9 C2 m! X2條equation solve 唔到3個unknown ga....

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5 m4 w2 m* ?/ E' e* M- ]此言差矣~1 h$ z5 g+ }; Z* V# p
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2條equation solve 唔到3個unknown ga: P- U$ Y" e4 l$ J7 @5 e
還欠一個條件,就是3條equation都是linear independent(線性無關)的$ j0 l& C( r- P6 S# b% L, T- p- o4 \

: R. f- C1 f2 a- l/ [' S7 w, }簡單點說,多元一次方程就是線性方程的一個例子
( k' `! \& @  B; h0 f2 m1 X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4 o. [( N9 }4 y2 M  x- ?3 E7 D

& J3 A4 ?8 c: J8 ~' j! X0 _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~)
: ~* A" T7 O3 r8 _( o& ~" [例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
! }) Z. w5 H: s; k# S: W2 b3 I+ _有興趣就解解看
' \/ {& p5 {) g/ [不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# d2 u2 y5 ^5 U, M2 p
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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:7 G5 A* W4 S6 g" I
捉錯處就唔敢當
! k- O9 G$ p* y* H6 i不過,c=101n哥度(解...

9 Z. [, u% s# K
, c" y7 x4 \0 T3 d2 r/ ^9 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( [- m3 \: F- v
反而適當地調節一下 , 咁會理性好多" a" Y( G; J6 p% [: ^% ~+ y
就好似隻game 由12粒珠 加到13粒珠咁
0 Q: E5 D- J- G5 u2 `, o當''堂''好玩哂
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3 f. m$ R3 \8 d5 w& ~, Zp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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0 s( H+ ~+ ]0 f% p% q2 ?9 ~p.s. 求''堂''字正寫...

7 d- S0 _# t  n# K已是正寫吧