A lazy way to solve differential equations
The post describes essentially a spectral method for solving ODEs in the Taylor (monomial) basis. Haskell definitely makes it nice to play around with this, but the monomial basis is terribly ill conditioned and not a good choice for this application. The Chebyshev basis is much better. Anyone who finds this neat, I recommend checking out the chebfun family of packages. They use the same idea but with much more rigorous numerics.