| slovo | definícia |
difference equation
(encz) | difference equation,diferenční rovnice n: [mat.] |
difference equation
(foldoc) | difference equation
A relation between consecutive elements of a
sequence. The first difference is
D u(n) = u(n+1) - u(n)
where u(n) is the nth element of sequence u. The second
difference is
D2 u(n) = D (D u(n))
= (u(n+2) - u(n+1)) - (u(n+1) - u(n))
= u(n+2) - 2u(n+1) + u(n)
And so on. A recurrence relation such as
u(n+2) + a u(n+1) + b u(n) = 0
can be converted to a difference equation (in this case, a
second order linear difference equation):
D2 u(n) + p D u(n) + q u(n) = 0
and vice versa. a, b, p, q are constants.
(1995-02-10)
|
| |
Nenašli ste slovo čo ste hľadali ? Doplňte ho do slovníka.
na vytvorenie tejto webstránky bol pužitý dictd server s dátami z sk-spell.sk.cx a z iných voľne dostupných dictd databáz. Ak máte klienta na dictd protokol (napríklad kdict), použite zdroj slovnik.iz.sk a port 2628.
online slovník, sk-spell - slovníkové dáta, IZ Bratislava, Malé Karpaty - turistika, Michal Páleník, správy, údaje o okresoch V4