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Přímka - par. v.

Parametrické vyjádření přímky

ÚlohaPostup řešení
Vyjádření přímky - bod a směr a=x1 ; c=x2; b=u1; d=u2
Vyjádření přímky - dva body u = (y1-x1,y2-x2) -> a=x1 ; c=x2; b=u1; d=u2
Určení bodu a směru přímky A= [a,c]; u=(b,d)
Poloha bodu a přímky x1= a+bt; x2 = c+dt; existuje t
Průsečík přímek soustava dvou rovnic o dvou neznámých
Vyjádření rovnoběžky - bod a přímka vektory přímek jsou shodné (nebo násobky)
Vyjádření kolmice - bod a přímka určení vektoru tak, aby byl nulový skalární součin vektorů
Poloha dvou přímek rovnoběžné - násobek vektorů, kolmé - nulový součin
Created by: sima.petr
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