I’m trying to define a system of differential equations using matrix notation. The issue is that this matrix varies depending on the problem and in all the examples that I’ve seen the function f that goes in the ODEProblem() function, only has the three variables f(u,p,t). In the following example,…

How to add extra variables when defining ODEProblem in DifferentialEquations?

ChrisRackauckas August 2, 2022, 10:53am 4

It’s the identity matrix, so why not replace A*u with u and save the allocation?

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