You can already plot bivariate equations as implicit plots; e.g. things like "x^2 + y^2 < 9" or `sin(x) + sin(y) = 0.2` already work.
Are you asking about numerically solving systems of equations? Or 3D plotting? We might do one or both of those at some point, but they aren't on the near term road map.
Are you asking about numerically solving systems of equations? Or 3D plotting? We might do one or both of those at some point, but they aren't on the near term road map.