To define preconditioners, one must define a precs function in compatible stiff ODE solvers which returns the left and right preconditioners, matrices which approximate the inverse of W = I - gamma*J ...
Let us fit a parameterized ODE to some data. We will use the Lotka-Volterra model as an example. We will use Single Shooting to fit the parameters. using OrdinaryDiffEqTsit5, NonlinearSolve, Plots Let ...
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