Plot a function of three variable

Hey, I want to plot a function of three variables. Consider that I have a function like f(x,y,z)=x^2+y^2+z^2-3xyz, I want a surface plot of this function. How can I do that? Thanks!

Answer 1

[KSSV]

f = @(x,y,z) x.^2+y.^2+z.^2-3*x.*y.*z ;
x = linspace(-1,1) ;
y = linspace(-1,1) ;
z = linspace(-1,1) ;
[X,Y,Z] = ndgrid(x,y,z) ;
F =f(X,Y,Z) ;


figure
hold on
for i = 1:100
    surf(X(:,:,i),Y(:,:,i),Z(:,:,i),F(:,:,i)) ;
end

[Md Borhan Mia]

Thanks for the reply, KSSV. But, I want a 3D surface plot. How can I get that?

[Shubham]

syms X Y Z
f = @(x,y,z) x^2 + y^2 + z^2;
surff = f(X,Y,Z);
fimplicit3(surff)

[VBBV]

@Md Borhan Mia you can use view to visualize a 3D plot

f = @(x,y,z) x.^2+y.^2+z.^2-3*x.*y.*z ;
x = linspace(-1,1) ;
y = linspace(-1,1) ;
z = linspace(-1,1) ;
[X,Y,Z] = ndgrid(x,y,z) ;
F =f(X,Y,Z) ;


figure
hold on
for i = 1:100
    surf(X(:,:,i),Y(:,:,i),Z(:,:,i),F(:,:,i)) ;
end
view(45,45)