The book on „Continuous System Sinulation“ by Cellier and Kofman also discusses much of this material, including various integrators, simulation of differential-algebraic equations, and quantized state simulation.

Dang, its $100.

Back to (2023), you'll want to take a look at the DifferentialEquations.jl package. In fact, I'm simulating a Fender tone stack right now. ;)

I'm just surprised at the lackluster push from governments worldwide over simulation software, CAD etc when evaluating public funded projects or reviewing designs

we do have a bit of demand from the government in india

[1] https://www.tendertiger.com/TenderSearch.aspx?SerText=Simula...

[2] https://www.mod.gov.in/sites/default/files/RFP-TES-29-NOV-20...

Might be better to remove the #TtoDt from the url so we start at the top of the page -- I think it is included by mistake.