How is the math unlike anything used now? I have a BS in mechanical engineering and the math in this looks entirely standard to me. Then again, I did get a heav

How is the math unlike anything used now? I have a BS in mechanical engineering and the math in this looks entirely standard to me. Then again, I did get a heavy dose of similarly theory as an undergraduate, and that's rarely taught outside of fluid dynamics and heat transfer. Part of this seems pretty similar to that. The math might be unusual for a CS graduate, but my impression is that many CS graduates seem unjustifiably afraid of continuous math, probably from a lack of familiarity. Often the continuous case is easier, so being familiar with both approaches can be useful.