Change the value of b:
%Set the Domain of both x and y by setting the lower limit
a = 0 %Enter the lower limit of both x and y in the domain of the sketch
% VVV use a bigger b so that x, y have more points
b = 10 %Enter the upper limit of both x and y in the domain of the sketch
h = 0.05 %Identify the increment
%Setup the graphing properties for both x and y and z.
[x,y] = meshgrid(a:h:b); %Create the domain of the graph
z = -x^4+x^2-y^2; %Encode the function in terms of x and y (Note that all operations between x's and y's are done with dotted operation
%whos
%First Plotting Space. Sketch the surface with the title "Surface Plot"
subplot(2,2,1); %Divide the plotting space into Four parts and use the first plotting area
surf(x,y,z); %Plot the given surface
title("Surface Plot"); %Set the title as "Surface Plot"
%Second Plotting Space. Sketch the Mesh with the title "Mesh Plot"
subplot(2,2,2); %First PLotting Space. Sketch the surface with the title "Surface Plot"
mesh(x,y,z); %Use the second plotting space
title("Mesh Plot"); %Mesh Plot the given surface
%Set the title as "Mesh Plot"
%Third Plotting Space. Sketch the Level Curves at various heights with the title "Level Curves"
subplot(2,2,3); %Use the third plotting space
contour3(x,y,z); %Plot the Level Curves of the given surface
title("Level Curves"); %Set the title as "Level Curves"
grid on %Set Grid On
%Fourth Plotting Space. Sketch the Contour Map with the title "Contour Plot"
subplot(2,2,4); %Use the fourth plotting space
contour(x,y,z); %Plot the Level Curvesof the given surface
title("Contour Plot"); %Set the title as "Contour Plot"
axis equal %Set Grid On
grid on %Set the Axes to have the same scale
%Start Using Rotate 3D Tools to rotate the solids
