MATLAB: 3D plotting of equation

equation 3d plot

Hi! I need to plot such an equation (function) in 3D space:
2*x^2+1.5*x*y-.8*x*z+2.5*y^2-3*y*z+z^2-0.35=0.
Everything that I have found, the function is
   f(x,y,z)=... or f(x,y)=... .
I tried to use
v=2*x^2+1.5*x*y-.8*x*z+2.5*y^2-3*y*z+z^2;
scatter3(x(:), y(:), z(:), [], v(:));
and slice v=0.35, but turns out only x, y and z could be sliced.
Thank you very much in advance.

Best Answer

 syms x y z
 f = 2*x^2+1.5*x*y-.8*x*z+2.5*y^2-3*y*z+z^2-0.35;
 fimplicit3(f, [-2 2 -2 2 -2 2])
Related Question