MATLAB: How can i draw graph of z^2=x^2-y^2 on matlab

Question

Answer 1

Is this what you want:

f = @(x,y) (x.^2 - y.^2).^2;                                % Your Function
x = linspace(-10, 10, 150);                                 % X-Range
y = linspace(-10, 10, 150);                                 % Y-Range
[X,Y] = meshgrid(x,y);                                      % Create Matrix Arguments
figure(1)
sh = surf(X, Y, f(X,Y));
set(sh, 'EdgeColor','none')
grid on