%function accepts 1 string, 2 double and increments
%		a542("func_name", x, y, inc)
% function returns lowest found return of passed function
%
%exp.:
%		function z=func(x,y)
%		z=-(x*x + y*y);
%		end
%
%		a542("func",-2,-2, 0.1)
%		ans=6.3838e-016