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Bonusova uloha - 2 body

Posted: Wed Feb 27, 2013 12:30 pm
by Jana Stolcova
$\newcommand{\R}{\mathbb R}$
Dane su tri priamky:
$p=\{(s,s,1-s,1); s\in\R\}$,
$q=\{(t,2t,3-t,1-t); t\in\R\}$,
$r=\{(-u,-2,-1+u,2u);u\in\R\}$.
Najdite priamku, ktora pretne kazdu z nich.



2 body ziskali: Jakub Hybl, Katka, Simona