function [z, a] = coranaEval(per)i=0;a=-0.9:per:0.9;sz=size(a,2);z=zeros(sz,sz);for x=a  i=i+1; j=0;  for y=a    j=j+1;    z(i,j)=coranaFeval([x y]);  endend%Done!%First let's look at it in each dimension independentlyclgplot(z(:,1)) %Plot a slice of the function in x max 250.25%Notice the range is [250.0-250.25]pause %Strike any key to continueclgplot(z(1,:)) %Plot a slice of the function in y %Notice the range is [0-250]pause %Strike any key to continuemesh(a,a,z);view(30,60);grid;