DifferentialEquations.jl inputting out of domain value

General Usage
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There has a lot been written on this, so you might want to just read the docs on it.

https://diffeq.sciml.ai/stable/basics/common_solver_opts/#Miscellaneous

  • isoutofdomain : Specifies a function isoutofdomain(u,p,t) where, when it returns true, it will reject the timestep. Disabled by default.

https://diffeq.sciml.ai/stable/features/callback_library/#PositiveDomain

If these “fail”, see

https://diffeq.sciml.ai/stable/basics/faq see " My ODE goes negative but should stay positive, what tools can help?".

Also,