sakura310

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/ h. t1 x2 O. P" I; V6 |2008-01-18 00:25:24 | 阿感 | 2* h1 ?% }; N, k- q
2008-01-18 00:24:20 | playbr2 | 2
6 W. s* I; G; f: X3 k2 J2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:$ B. M' T' P) b- d, \
Filename: DSC01158.JPG
9 V$ b% \5 G- L8 p; ^- U- {: n% M( FDatetime | Downloaded by | Counts! y( T; p* W1 W' @! k
2008-01-18 00:25:24 | 阿感 | 26 C! ^& k  s+ c0 P/ q) M8 G2 v
2008-01-18 00:24:20 | playbr2 | 2# C; ]% i3 C; \- u: ], p) o
2008-01-18 00:22:02 | 但丁 | 2% n! i3 W1 ]/ F
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點解大家都down兩次? XD

; {4 |% ^+ {" B  L5 v

) [4 F( Y/ l1 I我第一次開睇左2秒就close 左
) _% k0 y; @# m' {& L5 Q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:! A+ Q" R$ u3 o' N
Filename: DSC01158.JPG" g  L+ n, b2 |, }# F
Datetime | Downloaded by | Counts' H* {6 W- f3 x. S9 k; X
2008-01-18 00:25:24 | 阿感 | 2
. _- p6 V2 W0 G3 C% \* o2008-01-18 00:24:20 | playbr2 | 2
! ]: {4 I. q0 q3 _1 z0 E2008-01-18 00:22:02 | 但丁 | 2
6 C" u; L  B% M; f; M7 G
! D3 F3 p. `. }7 z% b5 }點解大家都down兩次? XD

" B0 E0 `+ P& d5 @1 T  ]; k/ t6 `# t/ R; o: g( {
快d捉我錯處% _2 C! a# E0 d0 Z+ p. C5 \
話吾定我都打錯 + - 符號
! L) u# l* }" C7 N- F0 Z/ m9 t7 j+ @係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當7 p) v4 |2 c1 ?( Q
不過,c=101n哥度(解除n係正整數的限制,只是整數)5 X& Q: @* i& f# t0 N
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~)6 L6 |& W; Z9 D9 D
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題) D6 f8 w& u0 f
但原先是不知答案,所以唔知有無失根
5 ~6 I, D# G  Q2 b8 l& s; e
. m) r2 f: W7 E有時見到題目都感到有點不爽6 Y# k2 m# L0 H: l# _% Q
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 `, j9 y5 L( ^. A( ?; g$ `
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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/ i  b+ m) Z& \. [+ r/ \2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:4 @1 s5 A- N% X1 \
冇答案ga....
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2條equation solve 唔到3個unknown ga....

4 a  |# v  D2 Q) t5 k7 }5 n
& f, w* f3 ~. c/ {. b- a& xagree
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2 equations 2 unknows5 z" K# I: R0 u$ F% b

/ Q1 U2 ~9 T, c0 O5 x( ^( x* yif 3 unknows there should be 3 equations 5 }, g7 _  C6 y

# |# I8 _. n- {, R' zmake it simple
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say
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6 f* L* z" J2 sa + b +c = 3
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; g( ~9 p( ^! t! Da+b = 2
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then c is 1 $ n4 g: I+ O7 R+ d, Q* D( @

% p+ U, y9 @' P8 y% d4 r2 }" T/ \a = 2 - b
) K' [( p& h" n7 ]0 C5 Q* h
" i1 x& A( V# r) x' I$ uso 0 = 0 8 j* N4 o2 _: D' ~+ W8 D. F7 L
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:% \+ I4 s$ G. ^. S: V! l
冇答案ga....
& {. u8 M! m- Q4 k1 E, W) R* }- J  p6 p; P+ a: q$ T  Y
2條equation solve 唔到3個unknown ga....

* D. T& t! v4 S0 @3 `% Z4 v. Z7 w" H/ J! _9 G( y8 h9 o
此言差矣~8 r) z3 x7 @3 u/ n' e. f. K' N
7 |! j+ J$ G+ L7 Q9 u6 \' @
2條equation solve 唔到3個unknown ga
5 R2 S; K+ G: O0 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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8 C1 S+ d) E& H. L+ X& O* J簡單點說,多元一次方程就是線性方程的一個例子6 [- l- u. b$ }4 w  \9 z
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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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~)
* s4 u# A) k$ |8 B8 Z. K8 F$ o例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
% o: G* U" r4 K8 n; \  T有興趣就解解看  ]9 K2 G) j/ }4 B" Q( j- h
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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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:4 ?0 x0 N3 L# f  l7 H
捉錯處就唔敢當4 X0 V* ?1 }% V8 X0 O2 [  W' {. w
不過,c=101n哥度(解...

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7 c0 v. d/ [! 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. F7 P" X( e6 W$ H, O2 Y- J
反而適當地調節一下 , 咁會理性好多/ x5 `' H- O; v
就好似隻game 由12粒珠 加到13粒珠咁6 V9 F, K% n. \
當''堂''好玩哂3 }8 |) c+ a7 N3 l

1 H, ~' }! e9 k7 h$ d5 r: ^; ep.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:# U' l0 j7 u+ l, a; I% b
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/ |6 t# O8 l) S% D2 W9 hp.s. 求''堂''字正寫...

: e5 M$ i' [2 k  y9 ~2 ?1 U已是正寫吧