Elliptic Paraboloid - with equation

This models shows the elliptic paraboloid z=x^2/4+y^2/7 with its formula. There is a second .stl file showing the surface without the equation.

This model was designed and printed by my WLU summer research student Emily Jaekle ('16). See http://mathvis.academic.wlu.edu/2015/07/20/quadratic-surfaces-paraboloids/ for more information.