How can I plot multivariate polynomial such as f(x,y) = 2 + x + x*y^2 + 3*x^3*y^2 in R ?
For univariate polynomial, polynom package does it, but I haven't found multivariate counterpart.
How can I plot multivariate polynomial such as f(x,y) = 2 + x + x*y^2 + 3*x^3*y^2 in R ?
For univariate polynomial, polynom package does it, but I haven't found multivariate counterpart.