Don't use double quotes if using backticks.
Don't use mathrm for differentials.
Use e^x instead of exp.
Re-indent ode.py with tw=78.
Use f'(x) instead of \frac{df(x)}{dx}.
Fix partial derivative notation.
Use raw docstring for module (fixes "nth" escaping).
Typo
Don't use square brackets in math (except matrices, etc.).
All general forms as displaymath.
Re-work allhints docstring for exposure in API docs.