Author here. I'm not sure if this a typical case, but the reason I use serious-ish math is my major in physics. When I see a simulation problem calculus comes

Author here. I'm not sure if this a typical case, but the reason I use serious-ish math is my major in physics. When I see a simulation problem calculus comes to mind first. In my experience there was not a single time calculus was applied in everyday engineering on my projects.