Questions on the symbolic (DSolve, DifferentialRoot) and numerical (NDSolve) solutions of differential equations (including ODE, PDE, DAE) in Mathematica.
Useful links:
Differential Equation Solving tutorial for advanced
DSolvedocumentationAdvanced Numerical Differential Equation Solving tutorial for very extensive documentation on
NDSolve(including extending it with custom methods). Many features are documented only here.
Example questions: