An example question:
Solution for the Finite 2D Potential Well - Rotational Symmetry
It is being voted to close as off-topic. Reading the comments, that seems to be because it the physics is basically done, all that's left is to solve a differential equation. That is true, but I wonder if it's really a problem.
That question was just an example, let's focus on the general case. A lot of physics problems and exercises have very little physics and quite a lot of mathematics. Let us assume a question is asked where the physics is basically done, so that it is solvable through strictly mathematical procedures. The motivation is something like: the Lagrangian of a several body system, the velocity field of a fluid around a specific object, or the eigenstates of a QM system. Also assume the level is not too basic, so it is within our pre-established level.
Should we consider such a question off-topic?
Even though the answer only requires mathematics, it looks like the kind of question a physics student might be interested in. Do we want to keep it here or move it to math.stackexchange?