How i merge these two equations ?

clearvars;
 
% X=xv = Aceleração
% Y=yv = Massa
%Z = força

xv = linspace(0, 2 ); 
yv = linspace(0,2 ); 
[X, Y] = ndgrid(xv, yv ); 
Z = X.*Y;

 
surf(X, Y, Z, 'edgecolor', 'none '); 
xlabel('Massa'); 
ylabel('Aceleração'); 
zlabel('z');

xv2 = linspace(0, 3 ); 
yv2 = linspace(0,3 );

[X, Y] = ndgrid(xv2, yv2 );
Z = sqrt(2*X*Y);

surf(X, Y, Z, 'edgecolor', 'none '); 
xlabel('Gravidade'); 
ylabel('Raio'); 
zlabel('z');

[Walter Roberson]

How would you like them to be merged?

[Ian Samuelsson]

i can't find a way to make the two equations become one, and plot the information in the same graph

[Rik]

You have two equations:

Z=X.*Y;
Z=sqrt(2*X*Y);%note: this is not element-wise!

How would you propose to make it one equation? They are only the same when they are 0. Do you want to have one function apply to one range of x and y and the other to the rest? If so, what are the edges?

[Walter Roberson]

perhaps you just need to add

hold on

after the first surf() ?