Problem Code: 040609MATH

Posted by Amit Goyal on Jun 04, 2009; 4:39pm
URL: http://discussion-forum.276.s1.nabble.com/Problem-Code-040609MATH-tp3025750.html

Definition 1: A function f : R**n --> R is said to be quasi concave if for any 0 < t < 1 and any x, y in R**n  
f(tx + (1-t)y) ≥ min{f(x), f(y)}

Show that f(x, y) = min{x, y} is a quasiconcave function using the definition written above.