I'm a mathematician in the financial industry, but my senior year of undergrad I took a grad course at UCF called "Advanced Math for Engineers." It was very fun and interesting. I especially loved Fourier Transforms.
That would have been another subject covered within that class. The neat thing about an EE degree - you’re about 1 year away from an additional Physics degree or Math degree. That is one of the reasons I went into engineering. I had a love of science and math - and I got to optimize both studies, then do something practical with it ;-)