A. x=0:pi/20:2*pi;[x,y]=meshgrid(x);z=sin(y).*cos(x);surf(x,y,z)

B. x=0:pi/20:2*pi;[x,y]=meshgrid(x);z=sin(y).*cos(x);surface(x,y,z);grid on;view(-30,37.5)

C. fx=@(x,y) x;fy=@(x,y) y;fz=@(x,y) sin(y).*cos(x);fsurf(fx,fy,fz,[0,2*pi])

D. fx=@(x,y) x;fy=@(x,y) y;fz=@(x,y) sin(y).*cos(x);surface(fx,fy,fz,[0,2*pi])