%the dimension is two ,n=2;

clear
clc
lb=-1;
ub=1;
teix=0.01;
[X,Y] = meshgrid(lb:teix:ub);
Z=power(abs(X),2)+power(abs(Y),3);

% % mesh
mesh(X,Y,Z)
axis([lb ub lb ub 0 2]);
title('unc#nn#dpower');
xlabel('x');
ylabel('y');
zlabel('z')

% % % contour
v=[ 0  0.01 0.1 0.5 1];
[c,h]=contour(X,Y,Z,v);
clabel(c,h);
title('unc#nn#dpower');
xlabel('x');
ylabel('y');