I wish my university courses had started with the intuition behind and utility of the functions we were about to learn. Be it linear algebra, differential equat

I wish my university courses had started with the intuition behind and utility of the functions we were about to learn. Be it linear algebra, differential equations or Fourier transforms. This is what all these blog posts excel with. Of course I got it along the way, but I do believe it would have been easier if the background was something like this.