sakura310

Filename: DSC01158.JPG
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5 z4 D/ f  m+ S  v  G/ J2008-01-18 00:25:24 | 阿感 | 28 W* W2 H' L% R, M" S
2008-01-18 00:24:20 | playbr2 | 2
" _  }% Q) `" c" H0 ^2008-01-18 00:22:02 | 但丁 | 2' q2 ?8 o3 [% y; T' R/ }
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:) p2 _5 S& o1 r- ]& Z: F& w% p" U! f3 w
Filename: DSC01158.JPG3 z; I8 T" a; z; O* E' E2 {  H5 V1 k
Datetime | Downloaded by | Counts
5 }1 f( i, C( O2008-01-18 00:25:24 | 阿感 | 2% Q( Q; J, ~: j6 r) E
2008-01-18 00:24:20 | playbr2 | 2
  e# s- o) o2 a# P0 H" v( e2008-01-18 00:22:02 | 但丁 | 2
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) j. R% P! K; G' p4 p5 S" L+ D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7 D* t0 {/ u) M; B
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
$ X. |  }5 ?8 X4 p* VFilename: DSC01158.JPG7 o+ p8 a" v  n
Datetime | Downloaded by | Counts
$ N5 \7 ?5 |, v: y- F) A2008-01-18 00:25:24 | 阿感 | 2
+ P# [- s$ R+ l( O6 U5 q2008-01-18 00:24:20 | playbr2 | 2
6 a' C( |& f. Q5 `2008-01-18 00:22:02 | 但丁 | 2
: L  r  B: }8 K5 {  t' q
6 m2 `( d! `0 \7 A# o5 ~, x9 o) S點解大家都down兩次? XD

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- A0 q, {  ?# R1 v! x; C( x快d捉我錯處
' s" \9 F4 |% F/ a( {話吾定我都打錯 + - 符號' t0 r9 s8 l/ A" q3 }
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
$ j; J6 v" ]) W9 f4 d% G: O) d不過,c=101n哥度(解除n係正整數的限制,只是整數)
  ^2 W! D1 W7 p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 I& ?. G1 b( C0 ?4 g
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
% {6 n! e% F* I; o8 s+ J( z但原先是不知答案,所以唔知有無失根2 C# [* u9 o# M  Q( c  R
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有時見到題目都感到有點不爽: G/ P6 _4 J% i/ e1 n; f
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
: U1 L- C1 R( [( e  f& Q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....
4 H, T1 R" A+ ?5 X
3 B+ }8 n* i5 X3 I! R. o& ?5 Q4 r2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
5 E1 H8 J( }" R$ X* x9 Y# {冇答案ga....$ E% g2 Z, I; E- F" l7 x; _

- x% @$ j7 \% w7 Z2條equation solve 唔到3個unknown ga....

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1 Q0 r3 h: \) Q4 e/ F8 N! magree
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2 equations 2 unknows
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+ ?9 N5 m) n8 N& Q- b6 e- ^if 3 unknows there should be 3 equations . }; x( P5 V- R9 l: p, W6 D

: J0 r  G) d8 W, Rmake it simple 9 f; z* x& Y5 W0 s) d

4 f" W; [2 \  wsay ' ]4 Y, T* y1 {3 g/ F
3 `3 n; \8 c% b1 b  O# |1 b
a + b +c = 3: w. i" o) |; V! X& R% J

: M$ ^& X# E  b( H! ba+b = 2% p. V& W# p4 O3 A* B5 O

! e- S$ I  `, {6 {then c is 1 $ u; e! r2 E. p% u! q

- S6 K9 [- I9 i- Y7 ha = 2 - b 1 h0 p) `7 f$ c. u
" l  h% N2 m2 v" R$ |" N6 Q7 \! W
so 0 = 0 , s# j; N7 R/ ?! E

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' V, M9 Q7 X! B4 R" c, ~% c冇答案ga....
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. D, D, Z$ h- G7 b/ o/ D- R0 A, C6 q2條equation solve 唔到3個unknown ga....

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此言差矣~" R6 n- B4 o4 t2 Q7 |; j
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2條equation solve 唔到3個unknown ga
* e# u+ @* c" f7 x' e3 h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
/ o8 ?/ R2 G% h7 T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+ t4 H9 W! [: U7 I
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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~)
  b- m! n" ?7 O; |' t' s例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解3 }1 M7 x, b4 b. ^
有興趣就解解看
' I, Y  c- @5 F3 i0 u6 w7 S* A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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0 X  Q, y( Y9 G% J: U" h+ O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:
- w1 j! _0 Y0 P3 n, {捉錯處就唔敢當
8 g5 K* ^7 w. b6 S" ]) P1 x: G不過,c=101n哥度(解...

' r; n1 M; |' F% X$ R9 a  ~$ `5 _9 T0 `1 V  e) G
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
+ J5 S# v. P1 \9 P' u% G, t+ O7 y7 E反而適當地調節一下 , 咁會理性好多
( q! V- B* K9 D' B1 {6 V/ j; H( I就好似隻game 由12粒珠 加到13粒珠咁
. ]6 V% b( C( ~) k當''堂''好玩哂* s2 L' o; z: W
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:. B( w4 ~( g- c* h" ~% J( i8 z) y

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p.s. 求''堂''字正寫...

; _9 z+ h" j7 m. p0 L/ P! [, T已是正寫吧