3D plot for polynomial

How can I plot a polynomial function in MATLAB? for example: 3xy^3+ 2x^2 y^2+ 6xy^3

Answer 1

[Mathieu NOE]

hi

see meshgrid and surf documentaion

      [x,y] = meshgrid(-2:.2:2,-4:.4:4);
      z = 3*x.*y.^3+ 2*x.^2 .*y.^2+ 6*x.*y.^3;
      surf(x,y,z)

[Dyuman Joshi]

You can directly use fsurf as well -

fsurf(@(x,y) 3*x.*y.^3+ 2*x.^2.*y.^2+ 6*x.*y.^3)