exista functie diferentiabila care pe Q in Q si R-Q?
Posted: Fri Feb 19, 2010 2:49 pm
Exista o functie diferentiabila \( f:\mathbb{R}\to\mathbb{R} \) astfel incat \( f(\mathbb{Q})\subset\mathbb{Q} \) si \( f^{\prime}(\mathbb{Q})\subset\mathbb{R}-\mathbb{Q} \)?