Multi variable functions

Another problem I found when trying to export to STL and 3D print was that the functions ended up being zero-thickness objects so they do not appeared in the STL files. [br][br]For example the function that you see below does not appears in the STL export.
f(x,y)=x^2+y
Solution:
This was also solved with a little trick: [br][br]We are going to create a simple parametric curve and once again with the surface command we will be able to create a surface that appears in the STL export. [br]We are going to treat our function as parametric curve using the parametrization: [math]\left(r,t,,f\left(r,t\right)\right)[/math] and the surface command:[br][br]Surface(r , t, f(r,t) , r , -2 , 2 , t , -2 , 2) Getting the following STL export:
You can try this in here. Remember to export to STL.

Information: Multi variable functions