Mathematica 8.0 running on Windows 7.
The documentation of Plot3D states that
“Plot3D has attribute HoldAll,
and evaluates f only after assigning specific numerical values to x and y.”
The notebook “example.nb” (attached) shows that this is not correct. Plot3D attempts to
evaulate the target expression symbolically.
This should be fixed … either the documentation or the code of Plot3D.