Re: DSE 2009

Posted by anon_econ on Feb 23, 2012; 12:15pm
URL: http://discussion-forum.276.s1.nabble.com/DSE-2009-tp7296495p7311600.html

there r infinitely many irrational numbers b/w any 2 rational numbers. if a function is continuous it has to take on both rational and irrational values unless it takes on only one rational value (as in this case). in ur example x=(2)^(1/4) will give an irrational value of y. hope u get the point.