I looked over the FAQ's and I was not doing anything wrong according to them but I have tried graphing all of the following and got blank graphs as a result every time. I am using Maple 12 on Mac OSX Leopard 10.5.4.

plot3d((2*x^2+y^2)*e^(1-x^2-y^2), x = -1 .. 1, y = -1 .. 1, axes = normal, scaling = constrained, numpoints = 10000)

implicitplot3d((2*x^2+y^2)*e^(1-x^2-y^2), x = -10 .. 10, y = -10 .. 10, z = -10 .. 10, axes = normal, scaling = constrained)

implicitplot3d((z = 2*x^2+y^2)*e^(1-x^2-y^2), x = -10 .. 10, y = -10 .. 10, z = -10 .. 10, axes = normal, scaling = constrained)

implicitplot3d((z = 2*x^2+y^2)*e^(1-x^2-y^2), x = -100 .. 100, y = -100 .. 100, z = -100 .. 100, axes = normal, scaling = constrained)

implicitplot3d((z = 2*x^2+y^2)*e^(1-x^2-y^2), x = -1 .. 1, y = -1 .. 1, z = -1 .. 1, axes = normal, scaling = constrained)

implicitplot3d((z = 2*x^2+y^2)*e^(1-x^2-y^2), x = -10 .. 10, y = -10 .. 10, z = -10 .. 10)

etc

Thanks in advance
Jeremy