“[ ... ]
There are only 90 primitive functional, algebraic, polynomial,
logarithmic, trigonometric, exponential, and differential
transformations. There are only a dozen basic tactics for
methods of solution. There are only 33 rudimentary sine and
cosine transforms. There are only 29 elementary classes of
Fourier transform functions. There are only a few score series
expansion modalities.

"Hooked on Differential Equations" sets each of these simple
concepts to music. Twisted Sister, Metallica, The Dead Kennedys,
Ozzy Osborne, and Queen Latifa will join you each week as you hum
along, mastering Laguerre polynomials and Bernoulli's equation.
You will be amazed when your friends discuss divergence in
cylindrical coordinates and you can suddenly put them in their
place with a spherical Laplacian! "What's the matter boys, are
you limited to inhomogeneous coordinate systems with constrained
symmetries? Ha!" From this day forward you will never again
have to pay for your own beer. You will have arrived!
[ ... ]”