I'm trying to maximize the volume of a box with an open top using this:
Maximize[{x*y*z , 2 x*z + 2 y*z + x*y == 12}, {x, y, z}]
I know the answer should be this
{4, {x -> 2, y -> 2, z -> 1}}
But I get this as a result
{\[Infinity], {x -> Indeterminate, y -> Indeterminate,
z -> Indeterminate}}