plot z2=x2+y2 in matlab in matlab

To plot z2=x2+y2 in Matlab, we need to define the values of x and y first. Then, we can compute the value of z using the equation z = x^2 + y^2. After that, we can create a 3D plot using the plot3 function.

Here's the code to do it:

main.m
% Define range of x and y values
x = linspace(-5,5,100);
y = linspace(-5,5,100);

% Compute the values of z
[X,Y] = meshgrid(x,y);
Z = X.^2 + Y.^2;

% Create a 3D plot
figure
plot3(X,Y,Z,'LineWidth',2)
xlabel('x')
ylabel('y')
zlabel('z')
title('z = x^2 + y^2')
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This code will create a 3D plot of the equation z = x^2 + y^2, where x and y values range from -5 to 5, and there are 100 points in each direction. The plot will have x, y, and z axes labeled accordingly.