function title = p13_title ( dummy ) %% P13_TITLE returns the title of problem 13. % % Modified: % % 09 April 2007 % % Author: % % John Burkardt % % Parameters: % % Output, string TITLE, the title of the problem. % title = 'f(x,y) = (x*y)^(-0.2) on ((0,0),(-7,0),(0,-3))';