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Nothing concrete to add, just the anecdote that the plasma physics class I took in grad school hands down had some of the sketchiest looking physicist math I think I have ever seen. Felt like a SWAT team from the mathematics department might burst through the door at any time.

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Just imagining the mathematics SWAT team coming through the door and swatting the marker out of one of my physics profs' hands when they went from ydy/dx=x -> ydy=xdx as if they were simply re-arranging a fraction, made me chuckle.

Like an ECON 101 course?

I felt like the Calculus SWAT Team was going to burst through the doors in that class, ha.

This was no regular spherical cow, I tell you it was assumed to be time-independent while at the same time having an oscillatory frequency.

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